What Is Sphericity

Multiple Choice

What is Sphericity?

A) A form of compound symmetry, which assumes that the variances of the difference between data taken from the same participant being tested are equal.
B) A form of compound symmetry, which does not assume that the variances of the difference between data taken from the same participant being tested are equal.
C) A form of parallel symmetry, which assumes that the errors of the difference between data taken from the same participant being tested are equal.
D) A form of compound symmetry, which assumes that the errors of the difference between data taken from the same participant being tested are unequal.