Question

According to the Empirical rule, for a distribution that is symmetrical and bell-shaped(in particular, for a normal distribution) approximately _______ of the data values will be within two standard deviations on each side of the mean

Select one:


a. 75%

b. 95%

c. 68%

d. 99.7%

Answer 1

Your answer is b because 95% of data is ideally with 2 deviations from the mean and 99.9% of data is within 3 deviations from the mean.