6
practice testMultiple Choice

Practice Test

Question 6 • Mathematics I

Which best describes the strength of the model with an r -value of negative 0 point 9 3 ?

Answer
A
a strong negative correlation
B
a weak positive correlation
C
a weak negative correlation
D
a strong positive correlation

Explanation

The correlation coefficient r describes the direction and strength of a linear relationship. Since r = -0.93 is negative, the correlation is negative; because its magnitude, 0.93, is close to 1, the relationship is strong. So the model has a strong negative correlation.

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