According to the Chebyshev rule, at least 75% of all observations in any data set are contained within a distance of how many standard deviations around the mean?
A) 1
B) 2
C) 3
D) 4

Question

Quizplus · Accepted Answer

The Chebyshev rule states that at least 75% of all observations in any data set are contained within a distance of 2 standard deviations around the mean. Therefore, choice B is the best answer.

According to the Chebyshev Rule, at Least 75% of All