Coefficient of determination for the data

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Regression analysis problem: Determine the correlation coefficient and coefficient of determination for the following data. Interpret the relationship between X and Y.

X: 5 3 6 3 4 4 6 8

Y: 13 15 7 12 13 11 9 5

Correlation coefficient is _______________?

Coefficient of determination is _______________?

Interpretation:

Which of these functions is(are) always increasing?

(I) f(x) = -x2 + 2x + 1

(II) f(x) = 2x - 1000

(III) f(x) = |x - 4| + 255

(IV) f(x) = -e-x,

A) (I) and (II) only

B) (II) only

C) (II) and (IV) only

D) (I) and (III) only

E) (III) and (IV) only

Reference no: EM131703483

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