According to Chebyshev's Theorem,what percent of the observations lie within ±2.25 standard deviations of the mean?
A)at least 80.25%
B)at least 75.25%
C)at least 55.56%
D)at least 95.25%

Question

Quizplus · Accepted Answer

Chebyshev's Theorem states that at least 1 - 1/k^2 of the observations lie within ±k standard deviations of the mean. For k = 2.25, 1 - 1/k^2 = 1 - 1/6.0625 = 0.8333, or 83.33%.

According to Chebyshev's Theorem,what Percent of the Observations Lie Within