Given a data set, how do you know whether to calculate sigma or s? Choose the co

Question

Given a data set, how do you know whether to calculate sigma or s? Choose the correct answer below. A. If the given data set contains a large number of entries, then sigma is calculated. If the data set contains a small number of entries, then sigma is calculated B. given a data set, one would have to determine if the presented the population or if a was a sample taken from the population. If the data are a population, then s is calculated. If the data are a sample, then sigma is calculated C. When given a data set one would have to determine if it represented the population or if it was a sample taken from the population. If the data are a population. then sigma is calculated If the data are a sample, then sis calculated. D. If the given data set contains a large number of entries, then sigma is calculated, if the data set contains a small number of entries, then s is calculated.

Explanation / Answer

Answer: c. When gicen a data set, one would have to determine if it represented the population or if it was a sample takenfrom the population. If the data are a population then is calculated. If the data are a sample, then s is calculated.

is a population parameter, or the notation for population standard deviation, while s is sample parameter, or the notation for sample standard deviation. The formulas differ slightly for both.
Large number and small numbers of data does not tell us if the data is representative of a population or a sample from a population.

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