7-5-15

Graphing Paired-Variable Statistical Data

Overlaying a Function Graph on a Statistical Graph

You can overlay an existing statistical graph with any type of function graph.

Example: Input the two sets of data shown below, and plot the data on a scatter plot. Next, overlay the scatter plot with the graph of y = 2 · ln(x).

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][Setting...].

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

Draw: On

Type: Scatter

XList: list1

YList: list2

(5)Tap yto draw the graph.

(6)Tap the List window to make it active, and then tap !.

(7)Input the following function into line y1: 2 ⋅ ln(x).

(8)Tap Oand then [Close] to close the Graph Editor window.

(9)Tap [SetGraph] on the menu bar. On the menu that appears, select the [Graph Function] check box.

(10)Tap yto draw the graph.

Tip

• After drawing a function graph, you can perform trace and other functions.

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