NAME _____________________________________________________ CLASS __________ DATE __________

7.2

GRAPHIC PORTRYAL OF A

TWO-VARIABLE DATA SET

Drawing a scatter diagram of a two-variable data set

1.Access the data entry screen and delete old data.

2.Enter the following data set giving the per capita waste generated in the United States between 1960 and 1988. Enter the year in L1 and pounds in L2.

Copyright © 1998, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only.

 

Total Waste generated by the

Year

Average U.S. Resident (pounds per day)

1960

2.66

1970

3.27

1980

3.61

1988

4.00

 

Source: U.S. Environmental Protection Agency

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.

Check the data you have entered, and save the data set by pressing

 

2ndF

 

 

 

 

 

 

 

 

 

, touch C L_DATA, double touch 1 StoLD, and press 1

 

 

QUIT

 

2ndF

 

LIST

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ENTER

.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4.

Construct an autoscaled scatter diagram of this data set by pressing

ZOOM

,

 

touching A ZOOM, touching on the screen, and double touching 9 Stat.

5.As the year increases, is the per capita waste generated by the average U.S. resident increasing or decreasing?

6.Does there appear to be a pattern in the way the per capita waste is changing as the year increases? If so, can you identify the pattern?

7.What was the mean amount of waste generated by the average U.S. resident between 1960 and 1988? Give units with your answer.

76 Blackline Masters/STATISTICS USING THE SHARP EL-9600

Page 80
Image 80
Sharp EL-9600 manual Graphic Portryal of a TWO-VARIABLE Data SET, Drawing a scatter diagram of a two-variable data set