Texas Instruments TI-83 ,

Statistics 12-33

8312STAT.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 12:42 PM Printed: 02/19/01 1:37

PM Page 33 of 38

Boxplot (regular box plot) plots one-variable data. The

whiskers on the plot extend from the minimum data point

in the set (minX) to the first quartile (Q1) and from the third

quartile (Q3) to the maximum point (maxX). The box is

defined by Q1, Med (median), and Q3 (page 12.29).

Box plots are plotted with respect to Xmin and Xmax, but

ignore Ymin and Ymax. When two box plots are plotted, the

first one plots at the top of the screen and the second plots

in the middle. When three are plotted, the first one plots at

the top, the second in the middle, and the third at the

bottom.

NormProbPlot (normal probability plot) plots each

observation X in Data List versus the corresponding

quantile z of the standard normal distribution. If the plotted

points lie close to a straight line, then the plot indicates

that the data are normal.

Enter a valid list name in the Data List field. Select X or Y

for the Data Axis setting.

• If you select X, the TI-83 plots the data on the x-axis and

the z-values on the y-axis.

• If you select Y, the TI-83 plots the data on the y-axis and

the z-values on the x-axis.

(Boxplot)

(NormProbPlot)