Statistics for the Behavioral Sciences
3rd Edition
ISBN: 9781506386256
Author: Gregory J. Privitera
Publisher: SAGE Publications, Inc
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Chapter 15.12, Problem 6.1LC
To determine
Identify the
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O REGRESSION AND CORRELATION
Predictions from the least-squares regressio.
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The managers of an electric utility wish to examine the relationship
between temperature and electricity use in the utility's service region
during the summer months. In particular, the managers wish to be able
to predict total electricity use for a day from the maximum temperature
that day. The bivariate data below give the maximum temperature (in
degrees Fahrenheit) and the electricity use (in thousands of kilowatt
hours) of electricity generated and sold for a random sample of sixteen
summer days. A best-fitting line for the data, obtained from least-
squares regression, is given by =53.28 + 3.07.x, in which x denotes the
maximum temperature and y denotes the electricity use. This line is
shown in the Figure 1 scatter plot.
Temperature, x Electricity use, y
(in degrees
Fahrenheit)
(in thousands of
kilowatt hours)
78.4
295.4
72.5
232.1
00-
72.7
276.8
94.5
363.4
375
94.8
335.6…
Do you observe a linear relationship between the two variables?
Us the table of data below to answer the following question. Which of these correctly has the linear velocity of the ankle in both the horizontal (X) and Vertical (Y) directions as determined by using the First Cental Difference formula for time 0.083 and 0.091 sec.
Time (s)
Ankle X (mm)
Ankle Y (mm)
0.075
712.6
163.3
0.083
727.4
175.9
0.091
738.9
186.7
0.099
750.0
199.9
Chapter 15 Solutions
Statistics for the Behavioral Sciences
Ch. 15.2 - Prob. 1.1LCCh. 15.2 - Prob. 1.2LCCh. 15.2 - Prob. 1.3LCCh. 15.2 - Prob. 1.4LCCh. 15.2 - Prob. 1.5LCCh. 15.4 - Prob. 2.1LCCh. 15.4 - Prob. 2.2LCCh. 15.4 - Prob. 2.3LCCh. 15.4 - Prob. 2.4LCCh. 15.6 - Prob. 3.1LC
Ch. 15.6 - Prob. 3.2LCCh. 15.6 - Prob. 3.3LCCh. 15.6 - Prob. 3.4LCCh. 15.8 - Prob. 4.1LCCh. 15.8 - Prob. 4.2LCCh. 15.8 - Prob. 4.3LCCh. 15.10 - Prob. 5.1LCCh. 15.10 - Prob. 5.2LCCh. 15.10 - Prob. 5.3LCCh. 15.12 - Prob. 6.1LCCh. 15.12 - Prob. 6.2LCCh. 15 - Prob. 1FPCh. 15 - Prob. 2FPCh. 15 - Prob. 3FPCh. 15 - Prob. 4FPCh. 15 - Prob. 5FPCh. 15 - Prob. 6FPCh. 15 - Prob. 7FPCh. 15 - Prob. 8FPCh. 15 - Prob. 9FPCh. 15 - Prob. 10FPCh. 15 - Prob. 11CAPCh. 15 - Prob. 12CAPCh. 15 - Prob. 13CAPCh. 15 - Prob. 14CAPCh. 15 - Prob. 15CAPCh. 15 - Prob. 16CAPCh. 15 - Prob. 17CAPCh. 15 - Prob. 18CAPCh. 15 - Prob. 19CAPCh. 15 - Prob. 20CAPCh. 15 - Prob. 21CAPCh. 15 - Prob. 22CAPCh. 15 - Prob. 23CAPCh. 15 - Prob. 24CAPCh. 15 - Prob. 25CAPCh. 15 - Prob. 26CAPCh. 15 - Prob. 27CAPCh. 15 - Prob. 28CAPCh. 15 - Prob. 29CAPCh. 15 - Prob. 30CAPCh. 15 - Prob. 31CAPCh. 15 - Prob. 32PRCh. 15 - Prob. 33PRCh. 15 - Prob. 34PRCh. 15 - Prob. 35PRCh. 15 - Prob. 36PR
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