TI 84 Statistics Calculator Online Guide
Statistics is one of the strongest use cases for an online TI-84-style calculator because list entry, regression and summaries are built around the calculator interface.
Enter data in lists
Use STAT then Edit to place values into L1, L2 or another list. Keep one variable in one list and paired data in two matching lists.
Run one-variable statistics
Use 1-Var Stats for mean, sum, standard deviation, quartiles and sample size.
Try two-variable regression
Use paired lists to check linear regression, quadratic regression or other models when appropriate for the dataset.
Create plots
Turn Stat Plot on when you want a scatter plot, histogram or box plot for visual interpretation.