HP 39gII - App views

HP App Summaries 19
HP App Summaries
19
The Statistics 1-Var App
The Statistics 1-Var App is designed for the study of univariate statistics. This App provides tools for entering numeric data, calculating 1-
variable summary statistics, and plotting 1-variable statistical graphs. This App can also provide summary statistics directly to the Infer-
ence App to calculate confidence intervals and test hypotheses. Table 6 summarizes the functionality of the Statistics 1-Var App. Press the
Apps key, scroll down to select the Statistics 1-Var App, and press the START menu key to get started. The Statistics 1-Var App starts in the
Numeric view.
Table 6 Statistics 1-Var App Summary
Summary of Functionality View Name and Display
Press Num to return to this view at any time. This view contains a table with up to ten
columns of data, named D1 through D9 and D0. The menu items are:
• EDIT: opens an input box to edit the chosen value
• INS: inserts a new row in the current column
• SORT: sorts the current column in either ascending or descending order
• BIG: toggles between large and small fonts
• MAKE: generates a column of data based on an algebraic formula
• STATS: provides summary statistics on the currently defined analyses (see Symbolic view)
Statistics 1-Var Numeric View
Press Symb to enter the Symbolic view. You can define up to 5 1-variable analyses (H1-H5),
choosing for each analysis a data column and an optional frequency column. For the data
column, you can enter either the name of a column (D0-D9) or a mathematical expression
involving the name of a column (e.g. D1-9.8). There is also a Plot field for each analysis
where you choose the graphical representation most fitting for your purposes. The menu
items are:
• EDIT: opens an input box to edit the chosen value
• CHK: toggles between making an analysis active or inactive for graphing and listing
summary statistics
• D: a typing aid for entering column names
• SHOW: displays the fit equation using Textbook Format
Statistics 1-Var Symbolic View