According to Chebyshev's theorem,at least what percent of the observations lie within plus and minus 1.75 standard deviations of the mean?
A)56%
B)95%
C)67%
D)100%

Question

Quizplus · Accepted Answer

Chebyshev's theorem states that at least 1 - 1/k^2 of the observations lie within plus and minus k standard deviations of the mean. In this case, k = 1.75, so at least 1-1/1.75^2 = 0.67 (or 67%) of the observations lie within plus and minus 1.75 standard deviations of the mean. Therefore, the best choice is C) 67%.

According to Chebyshev's Theorem,at Least What Percent of the Observations