Application Guide

346 Data&Statistics Application
Ã
Normal Probability Plot with expression
Ä
Data point with coordinates
Basic Operations in Data&Statistics
The Data&Statistics application lets you explore and visualize data and graph
inferential statistics. The Lists&Spreadsheet application can work in conjunction with
the Data&Statistics application. The Lists&Spreadsheet Summary Plot and Quick
Graph tools automatically add a Data&Statistics application to show plots. A list that
you create in a problem (using the Lists&Spreadsheet or Calculator applications) can
be accessed as a variable in any TI-Nspire™ application in that problem.
Changing Data&Statistics Settings
1. From the Settings menu, select Settings.
2. Select the settings that you want to use.
• Display Digits. Lets you select the display format for numeric labels in the
current document. Select Auto to automatically follow the setting in the
Document Settings dialog box.
• Diagnostics. Displays the value of the r
2
or R
2
statistic (when available) under
certain regression equations.
- r
2
is displayed for Linear (mx+b), Linear (a+bx), Power, Exponential, and
Logarithmic regressions.
- R
2
is displayed for Quadratic, Cubic, and Quartic regressions.
Using the Default Caseplot
The Data&Statistics application plots numeric and string (categorical) data from
variables. When you add a Data&Statistics application to a problem that includes
lists, a default caseplot displays on the work area.
The caseplot is like having a stack of cards with information on them and scattering
the cards randomly on a table. You can click a dot to see the information on that
“card.” You can drag a dot to “group” the “cards” by the caption variable.