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I) 92% of the variation in y is explained by the x variable II) Indications are

ID: 3158778 • Letter: I

Question

I) 92% of the variation in y is explained by the x variable
II) Indications are there is a strong negative correlation between y and x
III) Indications are there is a strong positive correlation between y and x
IV) If x = 5, one would estimate y = -13.5

a. Only I and IV are true

b. Only I, II, and IV are true

c. Only I, III and IV are true

d. Only II and IV are true

e. Only III and IV are true


If the equation of the regression line between two variables x and y is given by the equation (y-hat) = 2 - 3.1x for values of x between 1 and 10, and the correlation coefficient r = -0.92 consider the following statements and identify which are true.

I) 92% of the variation in y is explained by the x variable
II) Indications are there is a strong negative correlation between y and x
III) Indications are there is a strong positive correlation between y and x
IV) If x = 5, one would estimate y = -13.5

a. Only I and IV are true

b. Only I, II, and IV are true

c. Only I, III and IV are true

d. Only II and IV are true

e. Only III and IV are true

Explanation / Answer

ANSWER (d)

only II and IV are true