Answer :

Chebyshev's theorem states that for a large class of distributions, no more than 1/k² of the distribution will be k standard deviations away from the mean.

This means that 1 - 1/k² of the distribution will be within k standard deviations from the mean.

Because k = 1.8, the amount of the distribution that is within 1.8 standard deviations from the mean is
1 - 1/1.8² = 0.6914 = 69.14%

Answer:  69.1%

Answer:

84

Step-by-step explanation:

Chebyshev's Theorem states that the proportion of data values that lie within k=2.5 standard deviations of the mean is at least

1−1k2=1−12.52=0.84

So at least 84% of the data lies within 2.5 standard deviations of the mean, for any distribution.

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