TI-84 & TI-30XS Guides

Learn how to use normalcdf and invNorm on the TI-84 Plus CE for AP Statistics. Includes syntax, examples, common mistakes, and AP exam writing tips.

Step-by-step guide to running hypothesis tests on the TI-84 Plus CE. Covers 1-PropZTest, Z-Test, T-Test, and how to interpret p-values for AP Statistics.

How to calculate LinReg(ax+b) on the TI-84 Plus CE. Includes entering data in lists, running regression, interpreting r and r², and AP exam format.

Calculate confidence intervals on the TI-84 Plus CE. Covers ZInterval, TInterval, 1-PropZInt with worked examples in AP Statistics format.

How to use binompdf and binomcdf on the TI-84 Plus CE for binomial probability. Exactly-k vs at-most-k problems, syntax, worked examples, and AP exam format.

How to calculate standard deviation on the TI-84 Plus CE with 1-Var Stats. Entering data in lists, reading Sx vs σx, and which one to use on AP Statistics.

How to enter fractions on the TI-30XS MultiView with the n/d key, type mixed numbers, and convert between fractions and decimals with the answer toggle key.

The on-screen calculator on the GED math test is the TI-30XS MultiView. Learn the exact functions the GED requires and practice with the same calculator online free.

How to use the TABLE key on the TI-30XS MultiView to generate (x, y) value tables for any function — Auto mode, Ask mode, and exam use cases.

How to run 1-Var and 2-Var Stats on the TI-30XS MultiView: entering data lists, reading mean, Sx, and σx, and clearing data between problems.

Several Praxis math tests provide the TI-30XS MultiView as an on-screen calculator. Learn which tests include it, the functions you need, and practice with the same calculator free.

How to enter matrices on the TI-84 Plus CE and use rref( to solve systems of equations. Includes matrix arithmetic, inverses, and determinants.

How to switch between radian and degree mode on the TI-84 Plus CE, convert between units, and avoid the #1 cause of wrong trig answers on exams.

How to use the TVM Solver on the TI-84 Plus CE for compound interest, loans, and annuities. What N, I%, PV, PMT, and FV mean, with worked examples.

How to reset the TI-84 Plus CE: clear RAM, restore default settings, or wipe everything. What each reset deletes, what survives, and how to protect your programs first.

How to clear memory on the TI-84 Plus CE: delete programs, lists, and apps, archive what you want to keep, and clear the calculator before an exam.

How to update the TI-84 Plus CE operating system with TI Connect CE: download the latest OS, transfer it over USB, and avoid the "Validating OS" loop.

The Digital SAT has Desmos built into Bluebook, but you can still bring a TI-84 Plus CE. When each calculator wins, and how to practice with both before test day.

Essential TI-84 Plus CE functions for IB Math Analysis & Approaches and Applications & Interpretation. Covers statistics, calculus, and graphing.

Your TI-84 Plus CE runs a calculation but nothing appears on the graph screen? This guide covers all 7 reasons why the graph may be missing and exactly how to fix each one.

Calculator shows "Validating OS" and won't boot? This is a known firmware loop. Follow these exact steps to break out of the loop without losing your programs.

TI Connect CE says "No calculator detected" even though it's plugged in? Here are the 5 most common causes and how to fix them on Windows and Mac.

Getting a long decimal when you expect a fraction? Learn 3 ways to display exact fractions on the TI-84 Plus CE — including the MATH→Frac shortcut and changing default settings.

What does ERR:SYNTAX mean? What about ERR:WINDOW RANGE or ERR:DOMAIN? This guide explains every common TI-84 error message and how to clear it.

ERR:SYNTAX is the most common TI-84 error. It means the calculator can't parse your expression. Here is how to find the exact typo with GOTO and the 6 mistakes that cause it.

ERR:INVALID DIM usually means a stat plot is turned on while its lists are empty. Turn plots off with 2nd Y= → PlotsOff and the error disappears. Full walkthrough inside.

ERR:DIM MISMATCH means two lists or matrices have different sizes — most often L1 and L2 in a stat plot. Here is how to check list lengths and fix the mismatch.

ERR:DOMAIN means you passed a value the function cannot accept — like sin⁻¹(2) or a probability above 1 in normalcdf. Here are the common causes on AP Statistics problems.

ERR:DATA TYPE appears when a command receives the wrong kind of value — text where a number belongs, a list where a single value belongs. Here is how to track it down.

ERR:WINDOW RANGE means your graphing window is impossible — Xmin ≥ Xmax or Ymin ≥ Ymax. Fix it in the WINDOW menu or reset instantly with ZOOM 6.

ERR:ARGUMENT means a function received the wrong number of inputs — too few or too many. Here is the correct argument list for the functions that trigger it most.

ERR:UNDEFINED means you referenced a variable, list, or matrix that does not exist in memory — often after a RAM clear. Here is how to restore or re-create it.

Getting a "bad token" or invalid token error when sending files with TI Connect CE? It is usually a corrupt or incompatible file. Here are the 4 fixes that work.

Your TI-84 says sin(30) = -0.988 instead of 0.5? The calculator is in radian mode. Here is how to switch to degrees, when to use each mode, and how to convert without changing the setting.