Step-by-step instructions. Standard deviation can be calculated using several methods on the TI-83 Plus and TI-84 Plus Family. Standard deviation can be calculated by using the stdDev () function. The stdDev () function can be located by performing the following: 1) Press [2nd] [LIST]. 2) Scroll to MATH and select 7:stdDev (. The viewing rectangle on the TI-83 is 94 pixels by 62 pixels. (A pixel is a picture element.) It is useful when graphing to have a “friendly window” in order to avoid distortion in the graph and to avoid obtaining non-integer values when using the trace function of the TI-83. In fact, q ® (ZoomStat) usually gives a "friendly window".Product description. The TI-84 Plus calculator offers a built-in USB port, an improved display and preloaded applications designed to maximize student performance in numerous subjects including geometry, statistics, algebra, physics, chemistry, biology and others. Preloaded calculator software applications include topics in Algebra 1 and ...The TI‑84 Plus CE allows for undefined values on a graph. OVERFLOW. You attempted to enter, or you have calculated, a number that is beyond the range of the graphing calculator. The TI‑84 Plus CE allows for undefined values on a graph. RESERVED. You attempted to use a system variable inappropriately. SINGULAR MATRIXAuction Buy It Now 3,100 + results for ti-84 graphing calculator used Save this search Shipping to: 98837 Shop on eBay Brand New $20.00 or Best Offer Sponsored New Listing Texas Instruments TI-84 Plus CE Graphing Calculator Black (NO SLIDING COVER) Pre-Owned 3476 product ratings $64.99 Top Rated Plus Buy It Now jn_distributions (8,140) 99.1% Sep 22, 2019 · September 22, 2019. Texas Instrument’s best-selling graphing calculator, the TI-84, is a woefully outdated piece of technology. Since its debut in 2004, its specs and components have remained virtually unchanged. With 24 kilobytes of RAM, a 96×64 pixel screen, and a power system that still relies on 4 AAA batteries, it has been usurped by ... May 12, 2017 · The calculator is woefully under-equipped when compared with similarly priced electronics. For example, a TI-84 Plus and Kindle Paperwhite both sell for $99.99 on Amazon.com. The Kindle's screen ... To answer this, we can use the geometpdf () function. Press 2nd and then press VARS. Scroll down to geometpdf () and press ENTER. Then type in the following values and press ENTER. The probability that the fourth person the researcher talks to is the first person to support the law is 0.1024.To answer this, we can use the geometpdf () function. Press 2nd and then press VARS. Scroll down to geometpdf () and press ENTER. Then type in the following values and press ENTER. The probability that the fourth person the researcher talks to is the first person to support the law is 0.1024.Oct 29, 2020 · In this video, I give a introductory tutorial on the Texas Instruments TI-84 Plus calculator, one of the most commonly used graphing calculators today.Topics... Texas Instruments TI-84 Plus Graphing Calculator 10-Digit LCD. TI-84 Plus Graphing Calculator 10-Digit LCD. New. An essential educational tool it is conveniently preloaded with software including Cabri Jr. interactive geometry software to give users the edge they need to succeed in the classroom.At my school, we use a mix of both Desmos and Ti-84 calculators in different situations. We've taken tests on our Chromebooks before, so it's not like they couldn't allow us to use Desmos, but for the super serious college admittance tests that really want to minimize cheating only allow traditional calculators. Calculator Rules. Bring your own calculator. You can’t share one. You can only use your calculator on the portion of the test labeled Math Test – Calculator. You may not use a calculator while working on the Math Test – No Calculator portions, or during the Reading and Writing and Language sections. You must put the calculator away during ... We would like to show you a description here but the site won’t allow us. Texas Instruments graphing calculator is ideal for students of all ages. The Texas Instruments TI-84 Plus Graphing calculator 10-Digit LCD has eight display lines, includes a USB computer cable and is fully compatible with TI-83 Plus. More than a dozen preloaded apps. Ideal for middle school through college.Explore free software for the TI-84 Plus family of graphing calculators. Connect to multiple calculators, manage TI-Basic programs and more. Download now. At my school, we use a mix of both Desmos and Ti-84 calculators in different situations. We've taken tests on our Chromebooks before, so it's not like they couldn't allow us to use Desmos, but for the super serious college admittance tests that really want to minimize cheating only allow traditional calculators.Best ti 84 calculator online. We have the most sophisticated and comprehensive TI 84 type graphing calculator online. Includes all the functions and options you might need. Easy to use and 100% Free! We also have several other calculators. Please pick the appropriate calculator from below to begin. You can use your keyboard's Numpad to enter ...Texas Instruments Ti-84 Plus Graphing calculator - Black (Renewed) 91. 300+ bought in past month. $9599. New Price: $103.00. FREE delivery Sep 7 - 12. Or fastest delivery Sep 6 - 11. Only 1 left in stock - order soon.Mar 26, 2016 · Scientific notation on a TI-84 Plus calculator looks a little different than what you’re used to seeing in class. For example, 2.53*10 12 will display as 2.53 E 12. You can enter an expression in scientific notation by pressing [2nd][,] to type an E, but entering an expression in scientific notation doesn’t guarantee that your answer will remain in scientific notation. TI-84 Plus CE Online Calculator. The TI-84 Plus CE Online Calculator is a Chrome™ browser-based web app that emulates a TI-84 Plus CE graphing calculator on Windows®, macOS®, and Google Chromebook™ computers. This subscription-based app lets you tackle math and science problems anytime, from any computer, with just a click of your mouse.Getting started with the TI-84CE from un-boxing to performing simple calculations, see how to change your settings, store variables and use some of the built...Oct 29, 2020 · In this video, I give a introductory tutorial on the Texas Instruments TI-84 Plus calculator, one of the most commonly used graphing calculators today.Topics... Price: 30 $. Product condition: Used. See details. Lot texas instruments. Graphing texas instruments ti84 plus. Of the brand texas instruments * With the following characteristics usb * A size of handheld * A power source of the type battery * Including: graphing, plus ¬. El Paso. eBay. Price: 475 $.Texas Instruments TI-84 Plus Graphing Calculator TI84+ (3476) $35.99 to $59.99 Trending at $45.99 $4.97 shipping 140 sold TI-84 Plus Graphing Calculator + Batteries, BUDGET BARGAIN, Texas Instruments (1) $39.00 Trending at $48.00 Free shipping or Best Offer TI-83 Graphic Calculator plus Sliding Cover Texas Instruments Graphing TI83 83 (2883)Shells got more elaborate over time, culminating in Doors CS by Christopher Mitchell (KermMartian), which had icons for assembly programs, a cursor-based UI, and a bunch of routines for programs to use. TI-84+ USB mass storage driver. The 84+ had a really wacky USB port: it was an On-the-Go port, very obscure when it was released.Free worksheets download, advance algebra, "methods" TI-84 plus download program, dividing algebraic fractions worksheet. Math revision sheets ks3, = 0.416666667 fraction, Trigonometry Answers, yardage decimal convert to fraction, freeonline test papers for primary 4.instructions, examples, and functions in this guidebook also work for the TI-84 Plus. The two graphing calculators differ only in available RAM memory, interchangeable faceplates, and Flash application ROM memory. Sometimes, as in Chapter 19, the full name TI-84 Plus Silver Edition is used to distinguish it from the TI-84 Plus.Texas Instruments Ti-84 Plus Graphing calculator - Black (Renewed) 91. 300+ bought in past month. $9599. New Price: $103.00. FREE delivery Sep 7 - 12. Or fastest delivery Sep 6 - 11. Only 1 left in stock - order soon. Periodic Table App. This app is not just your basic periodic table — students can also study and review trends in the periodic table easily with their TI graphing calculator. Additional benefits include: Fifteen properties and facts about the known elements. Graphs of the periodic nature of the elements. Easy navigation between the elements.TI-84 Plus CE Online Calculator. The TI-84 Plus CE Online Calculator is a Chrome™ browser-based web app that emulates a TI-84 Plus CE graphing calculator on Windows®, macOS®, and Google Chromebook™ computers. This subscription-based app lets you tackle math and science problems anytime, from any computer, with just a click of your mouse.The TI-84 Plus CE and TI-84 Plus C Silver Edition can display either Mathprint or Classic modes to solve equations. Mathprint is the default mode, to verify or change modes, press [MODE], highlight MATHPRINT or CLASSIC and press [ENTER]. To solve 2x+6=10 in Mathprint mode, follow the steps below: 1) Press [MATH] [ALPHA] [B] OR press [MATH] and ... Jul 19, 2022 · The TI-84 Plus CE stands out as a premium graphing calculator that you can rely on, boasting over a dozen built-in applications, including correct math notation, inequality graphing, and data collection. The graphing calculator is exceptionally thin and surprisingly lightweight and comes with a high resolution, full-color backlit display. Shop Texas Instruments TI-84 Plus Graphing Calculator Blue at Best Buy. Find low everyday prices and buy online for delivery or in-store pick-up. Price Match Guarantee. Jul 12, 2021 · A TI-84 Calculator, sometimes called a TI-84 Plus or a TI-84 Plus Graphing Calculator, is the gold standard right now for math, science, and statistics courses in high school (and beyond). In a nutshell, the TI 84 is a powerful calculator for students to create more complex graphs and solve higher math equations. Aug 9, 2022 · 1. Press the STAT button on your calculator. It's in the third column of keys. 2. Select the Edit menu and press ↵ Enter. It's the first option on the menu. You will see columns (lists) labeled L1 through L6. Note: The TI-84 allows you to enter up to six different lists of data sets. 3. It retains the same functionality as its predecessor, the TI-83+, but offers more memory, and several updated features. Keypress sequences that work on one usually work on the other. The keys on the TI-84+ are colour-coded by function. The white keys include the number keys, decimal point, and negative sign. When entering negative values, use ... It compares the TI-84, TI-89, TI-Nspire CX CAS. While all TI Graphing Calculators can be used on the AP and SAT Tests, the TI-84 CE has a colored display, is super slim and light, has long lasting power, available in different colors, has MathPrint functionality and is available at Amazon for $100. The Ti-84 CE Plus checks all the boxes. Two free links to the TI-84 Graphing Calculator and Desmos Calculator. As schools transition to remote learning, Texas Instruments (the company that makes the TI-84 Graphing Calculators used in class) is pleased to offer all students and teachers free, six-month software licenses for the TI-SmartView™ CE emulator software for the TI‑84 Plus ...The TI-84 Plus is the most widely used calculator on the ACT and the best version is the TI-84 Plus CE. Click the button below to see it on Amazon. One of the most common students ask before taking the ACT is, “Can I use my calculator on the test?” The answer is yes… but be careful.Mar 26, 2016 · Scientific notation on a TI-84 Plus calculator looks a little different than what you’re used to seeing in class. For example, 2.53*10 12 will display as 2.53 E 12. You can enter an expression in scientific notation by pressing [2nd][,] to type an E, but entering an expression in scientific notation doesn’t guarantee that your answer will remain in scientific notation. Shop Texas Instruments TI-84 Plus Graphing Calculator Blue at Best Buy. Find low everyday prices and buy online for delivery or in-store pick-up. Price Match Guarantee.From the keyboard and computer-menu interface to the ability to save and share work with built-in apps, the TI-Nspire™ CX II models retain the features and functionality that make TI-Nspire™ CX graphing calculators ideal for math and science from middle grades through college. Perform computations and enter expressions, equations and ...Texas Instruments TI-84 Plus Graphing Calculator TI84+ (3476) $35.99 to $59.99 Trending at $45.99 $4.97 shipping 140 sold TI-84 Plus Graphing Calculator + Batteries, BUDGET BARGAIN, Texas Instruments (1) $39.00 Trending at $48.00 Free shipping or Best Offer TI-83 Graphic Calculator plus Sliding Cover Texas Instruments Graphing TI83 83 (2883)Sep 22, 2019 · September 22, 2019. Texas Instrument’s best-selling graphing calculator, the TI-84, is a woefully outdated piece of technology. Since its debut in 2004, its specs and components have remained virtually unchanged. With 24 kilobytes of RAM, a 96×64 pixel screen, and a power system that still relies on 4 AAA batteries, it has been usurped by ... It retains the same functionality as its predecessor, the TI-83+, but offers more memory, and several updated features. Keypress sequences that work on one usually work on the other. The keys on the TI-84+ are colour-coded by function. The white keys include the number keys, decimal point, and negative sign. When entering negative values, use ...Oct 29, 2020 · The TI-84 Plus graphing calculator is allowed during the entire portion of the math section of the ACT.*. The questions get more difficult as the problem number increases, so you should aim to do questions #1-20 in 30 seconds each, #20-40 in 60 seconds each, and #40- 60 in 90 seconds each, on average. You can use your TI graphing calculator to ... Apr 7, 2018 · Product description. The TI-84 Plus calculator offers a built-in USB port, an improved display and preloaded applications designed to maximize student performance in numerous subjects including geometry, statistics, algebra, physics, chemistry, biology and others. Preloaded calculator software applications include topics in Algebra 1 and ... For example, a TI-84 Plus and Kindle Paperwhite both sell for $99.99 on Amazon.com. The Kindle's screen is far larger and higher in resolution. It has 4 GB of memory, which blows away the storage ...Yellow/School condition units are School Property versions in yellow color. Screen Scratches/Dents condition are budget units in Acceptable or better condition that minor screen scratches and dents. USB Cable (USB Mini-B to USB-A) for HP-50G, TI-84+, TI-NSPIRE, and Others. $3.95, 3/$9.93, 6/$15.96, 12/$29.88. How do I access the TI-84 Online? The TI-84 Online Calculator is the free version of the coveted TI-84 Calculator. Easily solve Algebra Problems Online. Do Calculus, Statistics and Trig too. Compute Mean, Median and Mode. Even Matrix Multiplication and Determinants of 3x3 Matrices can be found. Everything at your finger tips. Click below to start.Oct 29, 2020 · In this video, I give a introductory tutorial on the Texas Instruments TI-84 Plus calculator, one of the most commonly used graphing calculators today.Topics... Dec 4, 2017 · A dead TI-83+ calculator can be caused by poor electrical contact between the batteries and the main board. The batteries are located in the back cover. Th... Apr 7, 2018 · Product description. The TI-84 Plus calculator offers a built-in USB port, an improved display and preloaded applications designed to maximize student performance in numerous subjects including geometry, statistics, algebra, physics, chemistry, biology and others. Preloaded calculator software applications include topics in Algebra 1 and ... It retains the same functionality as its predecessor, the TI-83+, but offers more memory, and several updated features. Keypress sequences that work on one usually work on the other. The keys on the TI-84+ are colour-coded by function. The white keys include the number keys, decimal point, and negative sign. When entering negative values, use ... Get the best deals for ti 84 calculator used at eBay.com. We have a great online selection at the lowest prices with Fast & Free shipping on many items!Apr 14, 2020 · probability: the significance level. v: the degrees of freedom. You can access this function on a TI-84 calculator by pressing 2nd and then pressing vars. This will take you to a DISTR screen where you can then use invT (): This tutorial shares several examples of how to use the invT () function to find T critical values on a TI-84 calculator. Jun 24, 2022 · By Tech Powered Dad | June 24, 2022. The TI-84 Plus is the most widely used calculator on the ACT and the best version is the TI-84 Plus CE. Click the button below to see it on Amazon. One of the most common students ask before taking the ACT is, “Can I use my calculator on the test?”. The TI-84 Plus graphing calculator is allowed during the entire portion of the math section of the ACT.*. The questions get more difficult as the problem number increases, so you should aim to do questions #1-20 in 30 seconds each, #20-40 in 60 seconds each, and #40- 60 in 90 seconds each, on average. You can use your TI graphing calculator to ...The TI‑84 Plus CE allows for undefined values on a graph. OVERFLOW. You attempted to enter, or you have calculated, a number that is beyond the range of the graphing calculator. The TI‑84 Plus CE allows for undefined values on a graph. RESERVED. You attempted to use a system variable inappropriately. SINGULAR MATRIXWe would like to show you a description here but the site won’t allow us.Speed up your Search . Find used Ti 84 Calculator for sale on eBay, Craigslist, Letgo, OfferUp, Amazon and others. Compare 30 million ads · Find Ti 84 Calculator faster !| https://www.used.forsaleTexas Instruments TI-84 Plus Graphing Calculator 10-Digit LCD. TI-84 Plus Graphing Calculator 10-Digit LCD. New. An essential educational tool it is conveniently preloaded with software including Cabri Jr. interactive geometry software to give users the edge they need to succeed in the classroom. In this tutorial, I will be assuming you have never used a TI graphing calculator before. We will cover what you would need in a basic algebra or precalculus class. Detailed answers/keystrokes for all examples are at the end of each section. If you are following this tutorial on a TI-84 calculator you may have Mathprint installed. Turn Mathrprint The TI‑84 Plus CE allows for undefined values on a graph. OVERFLOW. You attempted to enter, or you have calculated, a number that is beyond the range of the graphing calculator. The TI‑84 Plus CE allows for undefined values on a graph. RESERVED. You attempted to use a system variable inappropriately. SINGULAR MATRIXThe TI-84 Plus is the most widely used calculator on the ACT and the best version is the TI-84 Plus CE. Click the button below to see it on Amazon. One of the most common students ask before taking the ACT is, “Can I use my calculator on the test?” The answer is yes… but be careful.Auction Buy It Now 3,100 + results for ti-84 graphing calculator used Save this search Shipping to: 98837 Shop on eBay Brand New $20.00 or Best Offer Sponsored New Listing Texas Instruments TI-84 Plus CE Graphing Calculator Black (NO SLIDING COVER) Pre-Owned 3476 product ratings $64.99 Top Rated Plus Buy It Now jn_distributions (8,140) 99.1%Auction Buy It Now 3,100 + results for ti-84 graphing calculator used Save this search Shipping to: 98837 Shop on eBay Brand New $20.00 or Best Offer Sponsored New Listing Texas Instruments TI-84 Plus CE Graphing Calculator Black (NO SLIDING COVER) Pre-Owned 3476 product ratings $64.99 Top Rated Plus Buy It Now jn_distributions (8,140) 99.1% Jul 12, 2021 · A TI-84 Calculator, sometimes called a TI-84 Plus or a TI-84 Plus Graphing Calculator, is the gold standard right now for math, science, and statistics courses in high school (and beyond). In a nutshell, the TI 84 is a powerful calculator for students to create more complex graphs and solve higher math equations. The TI-84 Plus C graphing calculator is one of the most popular calculators in the world. Find out the important keystrokes you need to know to use the TI-84 Plus, and learn the math functions and constants that the TI-84 Plus C makes available to you.Mar 26, 2016 · Scientific notation on a TI-84 Plus calculator looks a little different than what you’re used to seeing in class. For example, 2.53*10 12 will display as 2.53 E 12. You can enter an expression in scientific notation by pressing [2nd][,] to type an E, but entering an expression in scientific notation doesn’t guarantee that your answer will remain in scientific notation. How do I access the TI-84 Online? The TI-84 Online Calculator is the free version of the coveted TI-84 Calculator. Easily solve Algebra Problems Online. Do Calculus, Statistics and Trig too. Compute Mean, Median and Mode. Even Matrix Multiplication and Determinants of 3x3 Matrices can be found. Everything at your finger tips. Click below to start.Not so much. Using the recently improved Transformation app on the TI-84 Plus CE provides an illustration of the movement that changing the value of b has on the graph. Here are the steps to graph the function using the Transformation app: Press Œ} and choose the Transfrm to start the app running. Press o and enter the function in the problem ...Sep 6, 2022 · Is TI-84 Plus still used? In the ruthlessly competitive world of technology, where companies rush the latest gadget to market and slash prices to stay competitive, the TI-84 Plus is an anomaly. Texas Instruments released the graphing calculator in 2004, and continues to sell it today. Getting Started with the TI-84 Plus CE Graphing Calculator (English) View: View: 5.7 1,335 CE TI-Basic Programming Guide for the TI CE Family of Graphing Calculators (English) View: View: 5.7 871 TI-84 Plus CE Reference Guide (English) View: ViewScientific notation on a TI-84 Plus calculator looks a little different than what you’re used to seeing in class. For example, 2.53*10 12 will display as 2.53 E 12. You can enter an expression in scientific notation by pressing [2nd][,] to type an E, but entering an expression in scientific notation doesn’t guarantee that your answer will remain in scientific notation.The TI-84 Plus is the most widely used calculator on the ACT and the best version is the TI-84 Plus CE. Click the button below to see it on Amazon. One of the most common students ask before taking the ACT is, “Can I use my calculator on the test?” The answer is yes… but be careful.BOVKE Hard Graphing Calculator Case Compatible with Texas Instruments TI-84 Plus CE/TI-84 Plus/TI-83 Plus CE/Casio fx-9750GII, Extra Zipped Pocket for USB Cables, Manual, Pencil, Ruler, Black $17.99 $ 17 . 99The TI-84 Plus is a graphing calculator made by Texas Instruments which was released in early 2004. There is no original TI-84, only the TI-84 Plus, the TI-84 Plus Silver Edition models, and the TI-84 Plus CE. The TI-84 Plus is an enhanced version of the TI-83 Plus. The key-by-key correspondence is relatively the same, but the TI-84 features ... A dead TI-83+ calculator can be caused by poor electrical contact between the batteries and the main board. The batteries are located in the back cover. Th...At my school, we use a mix of both Desmos and Ti-84 calculators in different situations. We've taken tests on our Chromebooks before, so it's not like they couldn't allow us to use Desmos, but for the super serious college admittance tests that really want to minimize cheating only allow traditional calculators. Best ti 84 calculator online. We have the most sophisticated and comprehensive TI 84 type graphing calculator online. Includes all the functions and options you might need. Easy to use and 100% Free! We also have several other calculators. Please pick the appropriate calculator from below to begin. You can use your keyboard's Numpad to enter ...From the keyboard and computer-menu interface to the ability to save and share work with built-in apps, the TI-Nspire™ CX II models retain the features and functionality that make TI-Nspire™ CX graphing calculators ideal for math and science from middle grades through college. Perform computations and enter expressions, equations and ... Explore free software for the TI-84 Plus family of graphing calculators. Connect to multiple calculators, manage TI-Basic programs and more. Download now.
Save on Calculators. Brand New SEALED 2022 MODEL! Texas Instruments Ti-84 Plus CE Graphing Calculator. $98.97. Trending at $110.00. . 3x
Texas Instruments Used TI-83 Plus Graphing Calculator. Used calculator in good condition. Includes calculator, batteries, and slide case only. Very Good condition units have very few cosmetic issues. Acceptable condition units will have more and larger cosmetic imperfections and marks.All TI-30X and TI-36X models (Any Texas Instruments calculator must have “TI-30X” or “TI-36X” in its model name.) These TI calcuators will be familiar for those who have used TI-83s, TI-89s, etc. Our TI-36X Pro Calculator Tips and Tricks For The FE Exam. Texas Instruments TI-30X IIS Scientific Calculator Available Digitally on the ExamTons of TI-82s, around $10 a piece. A couple TI-84 Plus C Silver Colors for $45 a piece (I really liked these back in grade school, so definitively near the top of the list :P) A TI-Nspire with a TI-84 pad for $25. A TI-89 Titanium for $30 (negotiable). Casio's lineup is a lot more confusing to me, so I haven't looked at any of those.It compares the TI-84, TI-89, TI-Nspire CX CAS. While all TI Graphing Calculators can be used on the AP and SAT Tests, the TI-84 CE has a colored display, is super slim and light, has long lasting power, available in different colors, has MathPrint functionality and is available at Amazon for $100. The Ti-84 CE Plus checks all the boxes. Finding the Area Under a Standard Normal Curve Using the TI-84Visit my channel for my Probability and Statistics Videos.We would like to show you a description here but the site won’t allow us.Here is the list of approved calculators for the SAT ® if you want to make certain your calculator is permitted: TI-73 Explorer™ graphing calculator. TI-80 graphing calculator. TI-81 graphing calculator. TI-82 graphing calculator. TI-83 graphing calculator and TI-83 Plus graphing calculator. TI-83 Plus Silver Edition graphing calculator.By adding a Python version to the TI-84 Plus CE graphing family, students can learn to program using the same dedicated, distraction-free tool they are already familiar with from math classes. Python is: Easy to learn and use. Recommended for beginners and experienced programmers. Able to give students real-world experience that translates to ... This is the first in a series of videos teaching how to use a TI-84 Graphing calculator. This introductory video will cover many topics including simplifying...Apr 14, 2020 · Step 2: Fill in the necessary information. The calculator will ask for the following information: x: The number of successes. We will type 12 and press ENTER. n: The number of trials. We will type 19 and press ENTER. C-level:The confidence level We will type 0.95 and press ENTER. Lastly, highlight Calculate and press ENTER. Great calculator but some bugs This calculator is a great way to avoid spending $120-$200 on a Ti84 calculator. However I have found some bugs when it come to running some of the statistic test such as 2propztests etc. however for the majority of your functions, you can’t get a better calculator. -response to developer: The errors I found were in the statistics tests under “STAT —> TESTS ...As far as where you are allowed to use the calculator, almost every test or class that allows a TI-85 will allow a TI-84 as well. The TI-84 is a much better investment. (If the TI-84 is too expensive, look into getting a TI-83.Texas Instruments TI-84 Plus Graphing Calculator TI84+ (3476) $35.99 to $59.99 Trending at $45.99 $4.97 shipping 140 sold TI-84 Plus Graphing Calculator + Batteries, BUDGET BARGAIN, Texas Instruments (1) $39.00 Trending at $48.00 Free shipping or Best Offer TI-83 Graphic Calculator plus Sliding Cover Texas Instruments Graphing TI83 83 (2883) .