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-family residences. A random sample of 5 houses yields the following.
|Number of rooms
- 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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