Which statement is not true about correlation matrices?
A)Usually only the lower portion of the matrix is considered.
B)The diagonal elements all equal 0.
C)A correlation matrix indicates the coefficient of correlation between each pair of variables.
D)The upper triangular portion of the matrix is a mirror image of the lower triangular portion.

Question

Quizplus · Accepted Answer

The diagonal elements of a correlation matrix all equal 1, not 0, because each variable is perfectly correlated with itself.

Which Statement Is Not True About Correlation Matrices