You want to buy a tent in the shape of a pyramid. The rectangular base is 35 square feet, with a height of 4 feet. What is the v
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Answer:
(a) The sample variance is 16.51
(a) The sample standard deviation is 4.06
Step-by-step explanation:
Given
Solving (a); The sample variance.
First, calculate the class midpoints.
This is the mean of the intervals.
i.e.
So, the table becomes:
Next, calculate the mean
Next, the sample variance is:
So, we have:
The sample standard deviation is: