Question

Approximately what percentage of normally distributed data values will fall within 1 standard deviation above or below the mean? Select one:

a. 68%
b. 50%
C. 99.7%
d..95%

Answer 1

Approximately 68 percent of normally distributed data values will fall within one standard deviation above or below the mean.

Step-by-step explanation:

Approximately 68 percent of the data values from a normally distributed data set will fall within one standard deviation above or below the mean. This is known as the Empirical Rule. For example, if a data set has a mean of 50 and a standard deviation of 6, about 68 percent of the values will be between 44 and 56.