Essential TI-84 Commands for AP Statistics
Master these calculator functions to save time on the exam!
Official Resources
Quick Reference
Descriptive Statistics
| Function | Keystrokes | Use |
|---|
| Enter Data | STAT → EDIT | Input data into L1, L2, etc. |
| 1-Var Stats | STAT → CALC → 1 | Mean, StdDev, 5-number summary |
| Histogram | 2nd → STAT PLOT | Create frequency displays |
Normal Distribution
| Function | Keystrokes | Use |
|---|
normalcdf( | 2nd → DISTR → 2 | P(a < X < b) |
invNorm( | 2nd → DISTR → 3 | Find z for given percentile |
Binomial & Geometric
| Function | Keystrokes | Use |
|---|
binompdf( | 2nd → DISTR → A | P(X = k) |
binomcdf( | 2nd → DISTR → B | P(X ≤ k) |
geometpdf( | 2nd → DISTR → D | P(first success on trial k) |
Regression
| Function | Keystrokes | Use |
|---|
LinReg(a+bx) | STAT → CALC → 8 | Least-squares regression |
| Turn on r² | 2nd → CATALOG → DiagnosticOn | Show correlation coefficient |
Hypothesis Tests
| Function | Keystrokes | Use |
|---|
| 1-PropZTest | STAT → TESTS → 5 | Test one proportion |
| 2-PropZTest | STAT → TESTS → 6 | Compare two proportions |
| T-Test | STAT → TESTS → 2 | Test one mean |
| χ²-Test | STAT → TESTS → C | Chi-square test |
Pro Tip: Before the exam, press 2nd → MEM → 7 to reset your calculator if borrowing one!