Texas Instruments TI-92 Owners Manual - Page 281

Defining a Statistical Plot From the Data/Matrix Editor, you can use the entered data to define several types of statistical plots. You can define up to nine plots at a time. Procedure Note: This dialog box is similar to the Calculate dialog box. Note: If an item is not valid for the current settings, it will appear dimmed. You cannot move the cursor to a dimmed item. From the Data/Matrix Editor: 1. Press „ to display the Plot Setup screen. Initially, none of the plots are defined. 2. Move the cursor to highlight the plot number that you want to define. 3. Press ƒ to define the plot. Pathname of the data variable This example shows all items as active. On your calculator, items are active only if they are valid for the current setting of Plot Type and Use Freq and Categories? 4. Specify applicable settings for the active items. Note: Plots defined with column numbers always use the last data variable in the Data/Matrix Editor, even if that variable was not used to create the definition. Tip: To use an existing list variable for x, y, Freq, or Category, type the list name instead of the column number. Item Plot Type Mark x y Hist. Bucket Width Use Freq and Categories? Description Select the type of plot. For descriptions, refer to page 266. Select the symbol used to plot the data points: Box (›), Cross (x), Plus (+), Square (0), or Dot (ø ). Type the column number in the Data/Matrix Editor (C1, C2, etc.) used for x values, the independent variable. Type the column number used for y values, the dependent variable. This is active only for Plot Type = Scatter or xyline. Specifies the width of each bar in a histogram. For more information, refer to page 267. Select NO or YES. Note that Freq, Category, and Include Categories are active only when Use Freq and Categories? = YES. (Freq is active only for Plot Type = Box Plot or Histogram.) 264 Chapter 16: Statistics and Data Plots