When computing the mean of a set of values xi, the value of ∑xi
A) can never be zero
B) can never be negative
C) must always be positive
D) can be any value

Question

Quizplus · Accepted Answer

The value of ∑xi can be any value, whether positive, negative or zero. The mean is calculated by dividing the sum by the number of values, so the value of ∑xi does not determine the sign or magnitude of the mean.

When Computing the Mean of a Set of Values Xi