Question

# Julie found an r value to be -.56; Jill found an r value to be .58....

 Julie found an r value to be -.56; Jill found an r value to be .58. who had the stronger value ? Julie    b. Jill     c. they are both the same in strength d. none of these If an r squared   = .529, find the coefficient of non-determination. Suppose you calculated a corrleation value of .06 with critical value(s) = +/- 0.444, should you contnue on to regression ? Yes-no Why or why not ? since there is a significant correlation, continue on to regression b. since there is no significant correlation, continue on to regression c. since there is a significant correlation, DO NOT continue on to regression since there is NO significant correlation, DO NOT continue on to regression

(1)

Correct option:

b.    Jill

Explanation:
Since absolute value of Jill's r = 0.58 is greater than absolute value of Julie's r = 0.56, Jill had the stronger value.

(2)

Given :

R2 = 0.529

So

The Coefficient of Non-determination = 1 - 0.529 = 0.471

(3)

H0: Null Hypothesis: = 0 (Population correlation is 0)

HA: Alternative Hypothesis: 0 (Population correlation is not 0)

Since calculated value of r = 0.06 isless than critical value of r = 0.444, the difference is not significant. Fail to reject null hypothesis. Conclusion: (Population correlation is 0. So, we should not continue on regression.

So,

Correct option:

no

(4)

Correct option:

d.     Since there is NO significant correlation, DO NOT continue on to regression.

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