224 Sample Examination Five Section I Questions 10-12 refer to the following sce

Question

224 Sample Examination Five Section I Questions 10-12 refer to the following scenario and computer output A student had access to rainfall and sunshine data for a particular location over a period of 60 years She randomly selected a sample of 25 months from the 720 months available, and noted for each month in the sample the total rainfall (in millimeters) and the total sunshine (in hours). She then performed a regression analysis. Part of the computer output is shown below Dependent variable Sunshine SE Coef Coef Predictor Constant 248.984 14 48.45664 5. 14

Explanation / Answer

Answer to the question below:

10. Rsquare = sqrt(.221) = .470 . This is given in the table above.

Answer is A) -.470 because the rainflall coefficient is -ive and therefore the relation is going to be downwardsloped

Please take care of the -ive sign.

12.The answer is B) .0178 , as you can see that the coefficient of rainfall is .0178 in the table itself

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