Sharp EL-9600 manual Chapter seven

Chapter seven

GRAPHICAL PORTRAYAL OF A TWO-VARIABLE DATA SET

Introducing the Topic

In this chapter, you and your students will learn how to use the Sharp graphing calculator to graphically portray a two-variable data set with a statistical graph called a scatter diagram or scatter plot.

Calculator Operations

Before drawing a scatter diagram, data must be entered on the statistics data entry screen. You can either enter new data or recall a data set that has been stored within a matrix. (Refer to Chapter 5 for discussion on entering, storing and/or recalling a two-variable data set.) Consider the following table listing the revenue for a large corporation:

Year	Revenue (in millions of dollars)
1990	48.63
1991	48.86
1992	48.91
1993	49.69
1994	51.10
1995	52.00
1996	52.03

32Graphical Portrayal of a Two-Variable Data Set/STATISTICS USING THE SHARP EL-9600