Explore BrainMass

Statistics - Mean & Standard Deviation

What was the age distribution of prehistoric Native Americans?
Age Range: --------- 1-10 11-20 21-30 31-and over
Number of individuals: 34 18 17 11

Estimate the mean age expressed in years for this community, the sample standard deviation. For the class 31 and over, use 35.5 as the class midpoint.

Solution Summary

Neat and step-wise solutions are provided.