NAME _____________________________________________________ CLASS __________ DATE __________
7.1
GRAPHICAL PORTRAYAL OF
A TWO-VARIABLE DATA SET
Steps for drawing a scatter diagram of a
1. Consider the following table listing the revenue for a large corporation:
Year Revenue (in millions of dollars)
1990 48.63
1991 48.86
1992 48.91
1993 49.69
1994 51.10
1995 52.00
1996 52.03
2.Access the statistics data entry screen and delete old data.
3.Enter the data using L1 for the year and L2 for the revenue (in millions of dollars). Check the data and correct any errors you may find.
4. | Press |
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| STAT PLOT | , touch A PLOT1, and press | ENTER | to | |||||||||||||||||
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| access the PLOT1 set up screen. To turn PLOT 1 on, press | ENTER | . |
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| ENTER | |||||||||||||||||||||||
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| x variable by pressing | ▼ |
| 2ndF |
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| ENTER | . Press | 2ndF |
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| to set L2 for the y variable. To set the graph to scatter diagram, | ||||||||||||||||||||||||
| ENTER |
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| STAT PLOT | , touch G S.D., and double touch 3 Scattr. | ||||||||||||||||||||||||
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5. | Construct an autoscaled scatter diagram of this data set by pressing | ZOOM | , | ||||||||||||||||||||||||||
| touching A ZOOM, touching ➧ on the screen, and double touching 9 Stat | ||||||||||||||||||||||||||||
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| and press | ▼ repeatedly to verify that Xmin= 1990, | |||||||||||||||||||||||
| TRACE |
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Xmax= 1996, Ymin= 48.63, and Ymax= 52.03.
Blackline Masters/STATISTICS USING THE SHARP | 75 |
Copyright © 1998, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only.
