For data having a bell-shaped distribution, approximately __________ percent of the data values will be within one standard deviation of the mean.
A)95
B)66
C)68
D)97

Question

Quizplus · Accepted Answer

The empirical rule, or the 68-95-99.7 rule, states that approximately 68% of the data will fall within one standard deviation of the mean for data with a bell-shaped distribution. Therefore, Choice C is the best answer. Choices A, B, and D are either too high or too low.

For Data Having a Bell-Shaped Distribution, Approximately __________ Percent of the Data