Texas Instruments TI-73 EXPLORER Benutzerhandbuch

Chapter 6: Statistical Plots      

7306ENG.DOC   Statistical Plots and Analyses   Julie Hewlett   Revised: 05/29/98 3:52 PM   Printed: 05/19/99 9:00 AM

Page 123 of 20

7. Graph and trace the

adjusted Histogram.

* )
" and ! (to trace bar

to bar)

 

Box Plot   Ö

A Box plot illustrates median applications of a data list. Lines

on the plot, called whiskers, extend from the minimum data

point in the set (

) to the first quartile median point (

)

and from the third quartile median point (

) to the maximum

point (

). The middle vertical line is the median (

) of all

the data points.
The first quartile contains all data points between 

 and

; the third quartile contains all data points between 

and 

.

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.

 and

 specify minimum and maximum X-axis values

when a Box plot is displayed on the Graph screen. Box plots

ignore 

 and 

 values. To adjust 

 and 

manually, press ' and enter the new values with the

number keys. If you want the calculator to adjust the window

values for you automatically, press ( 

.

For more information about setting 

 values, see

Chapter 9: Function Graphing.

Solution

3 students received a D.

14 students received a C.

7 students received a B.

6 students received an A.

14 scores fall

between 70-80.

Intervals=10

because Xscl=10