HP 39gs Graphing manual Plot types, Histogram Box and Whisker Plot, To plot statistical data

To plot statistical data

1.In Symbolic view ( ), select ( ) the data sets you want to plot.

2.For one-variable data ( ), select the plot type in

Plot Setup (SETUP-PLOT). Highlight STATPLOT,

press , select either Histogram or

BoxWhisker, and press .

3.For any plot, but especially for a histogram, adjust the plotting scale and range in the Plot Setup view. If you find histogram bars too fat or too thin, you can adjust them by adjusting the HWIDTH setting.

4.Press . If you have not adjusted the Plot Setup

yourself, you can try select Auto Scale

.

Auto Scale can be relied upon to give a good starting scale which can then be adjusted in the Plot Setup view.

Plot types

Histogram

Box and Whisker Plot

One-variable statistics. The numbers below the plot mean that the current bar (where the cursor is) starts at 0 and ends at 2 (not including 2), and the

frequency for this column, (that is, the number of data elements that fall between 0 and 2) is 1. You can see information about the next bar by pressing the key.

One-variable statistics. The left whisker marks the minimum data value. The box marks the first quartile, the median (where the cursor is), and the third quartile.

The right whisker marks the maximum data value. The numbers below the plot mean that this column has a median of 13.

10-16 Statistics aplet