Question

When n-1 is used in the denominator to compute variance the data set is a sample....

When n-1 is used in the denominator to compute variance

the data set is a sample.

the data set is a population.

the data set could be either a sample or a population.

the data set is from a census.

For any distribution, statements about the proportion of data values that must be within a specified number of standard deviations of the mean can be made using

Chebyshev's theorem.

The empirical rule

Percentiles

A five-number summary

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Solution :

n-1 is used in the denominator to compute variance the data set is a sample

s2 =  \sum(x - \bar x)2 / n - 1  

For any distribution, statements about the proportion of data values that must be within

a specified number of standard deviations of the mean can be made using

The empirical rule

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