Question

Forty randomly selected students were asked the number of pairs of sneakers they owned. Let X = the number of pairs of sneakers owned. The results are as follows. X Frequency 2 2 4 13 13 1 Part (a) Find the sample mean x. (Round your answer to two decimal places.) Part (b) Find the sample standard deviation, s. (Round your answer to two decimal places.)

Answer 1

The mean of sample x is 5.83

The standard deviation is 5.63

What is standard deviation?

A standard deviation (or σ) is a measure of how dispersed the data is in relation to the mean. Low standard deviation means data are clustered around the mean, and high standard deviation indicates data are more spread out.

Given:

Frequency:  2 2 4 13 13 1

If x is the pair of sneakers owned of the frequency,

mean = 2+2+4+13+13+1/5

= 35/6

= 5.83

The  standard deviation is equal to 5.63.

Learn more about this concept here:

brainly.com/question/18119796

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