Casio FXCP400 y, 2 π σ, kPlot graphs, Med-BoxPlot (MedBox), Normal Distribution Curve (NDist), Graphing Paired-VariableStatistical Data

Med-Box Plot (MedBox)
This type of graph is often called a “Box and Whisker” graph. It lets you see	minX Q1 Med	Q3 maxX
how a large number of data items are grouped within specific ranges. The lines
from minX to Q1, and from Q3 to maxX are called “whiskers”. If [Show Outliers]
box is checked on the Set StatGraphs dialog box (page 131), “outlier” square
symbols are shown instead of “whisker” lines where a data value is relatively
large or small compared to the other data values.

Normal Distribution Curve (NDist)

The normal distribution curve is graphed using the following normal distribution function.

			(x–		) 2
	1	e–		x
y =			2σ 2
	2 π σ

Histogram Bar Graph (Histogram), Broken Line Graph (Broken)

A histogram shows the frequency (frequency distribution) of each data class as a rectangular bar. Classes are on the horizontal axis, while frequency is on the vertical axis.

In the broken line graph, lines connect the pointers that fall at the center of each histogram bar.

The Set Interval dialog box appears before the graph is drawn. You can use this dialog box to change the start value (HStart) and step value (HStep) of the histogram, if you want.

Graphing Paired-Variable Statistical Data

You can produce any of the graphs described below using paired-variable data. The text in the parentheses of the graph names below shows text that appears in the Type menu of the Set StatGraphs dialog box (page 131).

kPlot graphs

Draws graphs by plotting paired-variable points with x data on the horizontal axis and y data on the vertical axis.

Scatter plot (Scatter) xy line graph (xyLine)

Chapter 7: Statistics Application 132