Statistics
posted by Pat on .
Parametric procedures of quantitative analysis make an underlying assumption that...?
A. Dichotomous variables have been "smoothed"
B. The variables are measured at least at an ordinal level.
C. All responses are measured in a mutually exclusive manner
D. The underlying distribution of data is approximately normal.

D. Underlying distribution of data is approximately normal (most common assumption of a parametric test).