Nine people standing in an elevator are the following ages:5, 15, 25, 30, 35, 40, 45, 55, 65

What is the total number of data points (n) in the given set of data?

What is the mean age () of the people in the elevator?

Complete the following table:

x	(x)	(x)22
5
15
25
30
35
40
45
55
65
	Total = (x)22=

Given the correct value for (x)22and the value for n, what is the variance (22) of the given set of data (written to two decimal places without rounding)?

Variance= 22=

Using the correct value for the variance as calculated (written to two decimal places with no rounding), what is the standard deviation () of the given set of data (also written to two decimal places with no rounding)?

Standard deviation= =