littlecuzs2206 littlecuzs2206

23-01-2020
Mathematics

contestada

As part of the National Health and Nutrition Examination Survey, subjects were asked how long they slept the preceding night, and the following times (hours) were reported: 8, 7, 5, 7, 4, 7, 6, 7, 8, 8, 8, 6
The standard deviation is 1.3 hours.
What is the variance?

Respuesta :

Damilolaanif Damilolaanif

23-01-2020

Answer:

Variance = 1.69 hours

Step-by-step explanation:

The variance of the following number of set is the square of its standard deviation.

Therefore, variance = S.D * S.D

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