[SillyWilly377]

Which of the values below is impossible for the descriptive measure in question?
Answer
r = 1.25
mean = -0.2
s = 3.4
both (a) and (b)
both (a) and (c)

Here are the number of hours that each of a group of students studied for this exam:

2 4 22 6 1 4 1 5 7 4

What is the standard deviation of the number of study hours?
Answer 5.8
6.1
37.2
33.4
56

After finding the mean I then found the sum of all numbers divided that by the numbers minus one and got 6.09 which is 6.1 rounded up. Is this correct?

[Unknown008]

You received feedback on the first part of your question in the other thread you made.

For the second part, you should know the formula for standard deviation:



And with that, I get 5.782832918 = 5.8 (2 sf)