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(1) If you have a bivariate data set for 40 people, how many actual data values

ID: 3048115 • Letter: #

Question

(1) If you have a bivariate data set for 40 people, how many actual data values will you have in your data set?

(2) When 2 variables appear to be correlation but are actually related to some unmeasured third variable instead, we call the unmeasured variable a lurking variable. T or F

(3) The intercept for regression gives you an estimate of how the output variable changes as a function of the input variable. T or F

(4) When can correlation miss a real relationship

there is no correlation between X and Y

Explanation / Answer

1) Number of actual data values = 40*2 = 80

2) True

3) False; Slope provides the estimate of how the output variable changes as a function of the input variable.

4) If the relationshio between X and Y are not linear then correlation can miss the real relationship.

Option B is correct.