The empirical rule states that, for data having a bell-shaped distribution, the percentage of data values being within one standard deviation of the mean is approximately
A) 33%.
B) 50%.
C) 68%.
D) 95%.

Question

The empirical rule states that, for data having a bell-shaped distribution, the percentage of data values being within one standard deviation of the mean is approximately​
A) ​33%.
B) ​50%.
C) ​68%.
D) ​95%.

Quizplus · Accepted Answer

The empirical rule states that for data having a bell-shaped distribution, approximately 68% of the data values will fall within one standard deviation of the mean. This means that if a data set has a normal distribution, 68% of the values will fall within one standard deviation of the mean.

The Empirical Rule States That, for Data Having a Bell-Shaped