The covariance is not used as much as the correlation because:
A) it is not always a valid predictor of linear relationships
B) it is difficult to calculate
C) it is difficult to interpret
D) of all of these options
Correct Answer:
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Q1: The correlation value ranges from:
A) 0 to
Q4: A correlation value of zero indicates.
A) a
Q6: In linear regression, we fit the least
Q7: A scatterplot that appears as a shapeless
Q8: In regression analysis, the variable we are
Q10: In linear regression, the fitted value is:
A)
Q42: A "fan" shape in a scatterplot indicates
A)unequal
Q46: Correlation is a summary measure that indicates
A)a
Q50: Regression analysis asks
A)if there are differences between
Q72: The weakness of scatterplots is that they
A)do
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