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krestik krestik
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Posts: 20
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9 years ago
The city of Oakdale wishes to see if there is a linear relationship between the temperature and the amount of electricity used (in kilowatts).   Based on the data in the table below, is there a significant linear relationship between temperature and the amount of electricity used? These data are also available in the worksheet temperature in the Excel workbook Temperature.xlsx.

Temperature.xlsx
 
Temperature (x)
73
78
85
98
93
81
76
105
Kilowatts (y)
680
760
910
1510
1170
837
600
1800
 A.Yes, the sample correlation coefficient is equal to 0.981, which provides evidence of a significant linear relationship.   
 B.No, the sample correlation coefficient is equal to 0.098, which does not provide evidence of a significant linear relationship.   
 C.No, the sample correlation coefficient is equal to 0.981, which does not provide evidence of a significant linear relationship.   
 D.Yes, the sample correlation coefficient is equal to 0.878, which provides evidence of a significant linear relationship.
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wrote...
Educator
9 years ago
Yes, the sample correlation coefficient is equal to 0.981, which provides evidence of a significant linear relationship.
krestik Author
wrote...
9 years ago
Thank you very much Slight Smile
wrote...
Educator
9 years ago
You're welcome, krestik. Notice I changed the title of your topics, please mark it reflect the question like I have done next time you ask more.
krestik Author
wrote...
9 years ago
Got it Slight Smile
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