Statistics ITU Board 2079
What are the assumptions of Pearson's correlation? Bradford Electric Illuminating is studying the relationship between kilowatt hours (thousands) used and the number of rooms in private single…
10What are the assumptions of Pearson's correlation? Bradford Electric Illuminating is studying the relationship between kilowatt-hours (thousands) used and the number of rooms in private single-family residences. A random sample of 5 houses yields the following.
Number of rooms
11
10
14
7
9
Kilowatts-hours(thousands) used
9
8
11
5
9
- Find the correlation coefficient between the number of rooms and kilowatts-hours used. Interpret the result.
- Determine the regression equation of kilowatts hours used on the number of rooms. Interpret the value of the regression coefficient.
- Estimate the kilowatts-hours used for an 8 rooms house.
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