QuestionQuestion 10 out of 5 pointsIf the correlation between two sets of scores is 0 and one had to predict the

Question 1

0 out of 5 points

If the correlation between two sets of scores is 0 and one had to predict the value of Y for any given value of X, the best prediction of Y would be _________.

Question 2

5 out of 5 points

If = 57.2, = 84.6, and bY = 0.37, the value of aY = _________.

Question 3

0 out of 5 points

For the following points what would you predict to be the value of Y’ when X = 19? Assume a linear relationship.

X

6

12

30

40

Y

10

14

20

27

Question 4

0 out of 5 points

During the past 5 years there has been an inflationary trend. Listed below is the average cost of a gallon of milk for each year.

1981

1982

1983

1984

1985

$1.10

$1.23

$1.30

$1.50

$1.65

Assuming a linear relationship exists, and that the relationship continues unchanged through 1986, what would you predict for the average cost of a gallon of milk in 1986?

Question 5

5 out of 5 points

In multiple regression, if the second predictor variable correlates highly with the predicted variable, than it is quite likely that _________.

Question 6

5 out of 5 points

The least-squares regression line minimizes _________.

Question 7

5 out of 5 points

There is ________ between the sY½X and r.

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