HP Prime Graphing NW280AAABA manual Tap This opens a menu of app variables

Suppose you are in Home view and want to retrieve the mean of a data set recently calculated in the Statistics 1Var app.

1.Press a.

This opens the Variables menu. From here you can access Home variables, user-defined variables, and app variables.

2.Tap .

This opens a menu of app variables.

3.Select Statistics 1Var > results > MeanX.

The current value of the variable you chose now

appears on the entry line. You can press Eto see its value. Or you can include the variable in an expression that you are building. For example, if you wanted to calculate the square root of the mean computed in the Statistics 1Var app, you would first press Sj, follow steps 1 to 3 above, and then press E.

See appendix A, “Glossary”, beginning on page 587 for a complete list of app variables.

Qualifying You can qualify the name of any app variable so that it can be

variables accessed from anywhere on the HP Prime. For example, both the Function app and the Parametric app have an variable named Xmin. If the app you last had open was the Parametric app and enter Xmin in Home view, you will get the value of Xmin from the Parametric app. To get the value of Xmin in the Function app instead, you could open the Function app and then return to Home view. Alternatively, you could qualify the name of the variable by preceding it with the app name and a period, as in Function.Xmin.

110 An introduction to HP apps