Sharp EL-9600 manual Chapter three

Chapter three

HISTOGRAM REPRESENTATION OF A ONE-VARIABLE DATA SET

Introducing the Topic

In this chapter, you and your students will learn how to use the Sharp graphing calculator to represent a one-variable data set as a histogram. Typically, a histogram is represented on a horizontal (x) axis scaled according to the data, with a vertical (y) axis scaled according to the data's frequency individually (discrete) or within an interval (continuous). In each case, a bar is drawn with its width determined by an interval on the x-axis, and its height determined by the frequency of data within the interval.

Normally, you should seek between 5 and 7 intervals or bars; however, there will be times you will need more or less intervals. Interval widths can be determined logically or mathematically. Remember, the object of viewing a histogram is to obtain or portray characteristics of the data's distribution, therefore the number of intervals may vary.

Calculator Operations

Turn the calculator on and press STAT to enter the statistics menu. Touch A EDIT, press ENTER , to view the statistics data entry screen. If there is a data set present within the lists on your calculator, use the

Histogram Representation of a One-Variable Data Set/STATISTICS USING THE SHARP EL-9600 11