CFA Practice Question

There are 434 practice questions for this study session.

CFA Practice Question

A bell-shaped, symmetrical frequency distribution has a mean of 45. If 95% of the observations on the variable fall between 30 and 60, the standard deviation of the variable is ______.
A. 5.00
B. 7.50
C. 15.0
Explanation: 95% of the observations in a bell-shaped, symmetrical frequency distribution lie within approximately 2 standard deviations of the mean. The standard deviation is then (45-30)/2 = 7.50.

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