7-5-1

Graphing Paired-Variable Statistical Data

7-5 Graphing Paired-Variable Statistical Data

With paired-variable statistical data there are two values for each data item. An example of paired-variable statistical data would be the change in size of an iron bar as its temperature changes. One variable would be temperature, and the other variable is the corresponding bar size. Your ClassPad lets you produce any of the graphs described in this section using paired-variable data.

Before trying to draw any of the graphs described below, configure the graph setup using the procedures under “Configuring StatGraph Setups” on page 7-3-2.

Drawing a Scatter Plot and xy Line Graph

Use the procedure below to plot a scatter diagram and then connect the dots to produce an xy line graph.

Example: Input the paired-variable data shown below. Next, plot the data on a scatter

diagram and then connect the dots to produce an xy line graph.

list1 = 0.5, 1.2, 2.4, 4.0, 5.2 list2 = –2.1, 0.3, 1.5, 2.0, 2.4

u ClassPad Operation

(1)mI

(2)Input the data shown above.

(3)Tap [SetGraph] and then [Setting…], or tap G.

(4)On the Set StatGraphs dialog box that appears, configure a StatGraph setup with the scatter plot settings shown below, and then tap [Set].

Draw: On

Type: Scatter

XList: list1

YList: list2

(5)Tap yto plot the scatter plot.

(6)Tap the List window to make it active.

(7)Tap [SetGraph] and then [Setting…], or tap G.

(8)On the Set StatGraphs dialog box that appears, configure a StatGraph setup with the xy line graph settings shown below, and then tap [Set].

Draw: On

Type: xyLine

XList: list1

YList: list2

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