I did these questions but im not sure if they are 100% correct since the back of the book is not showing the same answers (my teacher said the book could be wrong alot of the time).
3. Calculate the standard deviation for the following:
(17,18, 19, 20, 21, 22, 23, 24, 25, 26)
5. Find the quartile values, the interquartile range, and the standard deviation of the salaries listed below.
Great. What did you get when you did them?
Doesn't your teacher have correct answers that s/he can give you?
Originally Posted by Skoz
No he doesn't give it... ;/
I'm pretty sure there are 2 standard deviation equations. Maybe the book and you used different equations. This site gives the 2 equations I'm thinking of:
Standard Deviation Calculation