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Alona [7]
3 years ago
11

The variance of a sample of 121 observations equals 441. The standard deviation of the sample equals 1.91. 231. 21. 11.

Business
1 answer:
Cloud [144]3 years ago
6 0

The standard deviation of sample equals: 11

Explanation:

Given:

                                 variance of sample (S^{2}) = 121

                                 no, of observations made = 441

                                         standard deviation = ?

By using the formula:

                          Standard deviation (S) = \sqrt{variance}

                                                                 = \sqrt{S}

                                                                 = \sqrt{121}

                                                                 = 11

Hence the standard deviation is equal to 11.

 

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