According to the Chebyshev rule, at least what percentage of the observations in any data set are contained within a distance of 2 standard deviations around the mean?
A) 88.89%
B) 75%
C) 67%
D) 95%

Question

Quizplus · Accepted Answer

According to Chebyshev's rule, at least 75% of observations fall within 2 standard deviations of the mean for any data set, regardless of its distribution.

According to the Chebyshev Rule, at Least What Percentage of the Observations