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
