Students in a class were asked to report the number of pets of their family
# pets frequency
I figured the frequencies from the data provided but how do you calculate the sample mean and sample standard deviation?
The Sample Mean
To calculate sample variance from a frequency table read Learning Resources: Statistics: Power from Data! Variance and standard deviation (go down about half way).
Thank you for the information. If I interpreted it correctly, I believe the mean is 125/47.
I don't think I got the standard deviation right
Is this correct?