Can anyone help me with this question.

Question

What's the best answer?
Choose from these answers:
[(A):variance] [(B):standard deviation] [(C):sample mean] [(D):s-squared] [(E):unbiased estimate]

1.subtract the mean of all the scores from each score, then square that number and get the average of these squared deviations, what do you have?

2.take the square root of the mean of squared deviations from the mean of a set of numbers, what do you have?

Answer 1

A
B

http://www.mathsisfun.com/data/standard-deviation.html

Answer 2

Thanks. Damon.

Answer 3

You are welcome.