Tchebysheff's Theorem states that the percentage of measurements in a data set that fall within three standard deviations of their mean is:
A) 75%
B) 68%
C) 16%
D) at least 89%
E) at most 80%

Question

Quizplus · Accepted Answer

Tchebysheff's Theorem states that at least 89% of measurements fall within three standard deviations of their mean, regardless of the shape of the distribution. Therefore, the best choice is D.

Tchebysheff's Theorem States That the Percentage of Measurements in a Data