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## Data types

data variable - Numeric and alphabetic data stored in a two-dimensional format similar to a spreadsheet.

list variable - Numeric data stored in a single-column list.

group file - In TI Data Editor, a file that stores previously-created files together.

matrix variable - Numeric data stored in a two-dimensional format with one number per cell.

number variable - Numeric data stored in a single-number format with one number per file.

program - A set of commands that TI graphing calculators carry out as if you had typed them on the calculator.

string variable - Sequences of characters that define the text that a program shows or that accept input from the keyboard in a program.

text file - A text-based document that you can store on TI‑89, TI-92, and TI‑92 Plus calculators and the Voyage™ 200 Personal Learning Tool.

vector variable - Single-row matrices that you can use to store data.

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