A symmetric,bell-shaped frequency distribution that is completely defined by its mean and standard deviation is the ________ distribution.
A)gamma
B)Poisson
C)bimodal
D)normal
E)uniform

Question

Quizplus · Accepted Answer

The normal distribution is the only one out of the options that is symmetric, bell-shaped, and completely defined by its mean and standard deviation. The gamma and Poisson distributions are both skewed and not bell-shaped. The bimodal distribution has two peaks and is not necessarily symmetric. The uniform distribution is flat and not bell-shaped.

A Symmetric,bell-Shaped Frequency Distribution That Is Completely Defined by Its