Please tell me if i did this correct
posted by Jennifer on .
Given the following frequency distribution, find the mean, variance, and standard deviation. Please show all of your work.
Errors Frequency
5153 9
5456 19
5759 16
6062 24
6365 25
This is what I got:
Mean = 59.19
Variance = 1.43
Standard Deviation = 2.05

Try some of the following links for verification:
http://search.yahoo.com/search?fr=mcafee&p=how+to+find+the+mean%2C+variance+%26+standard+deviation+in+a+frequency+distribution
Sra