Why could the mean of the data set below be misleading?
ages of teachers: 29, 38, 39, 26, 29, 29, 39, 77, 38, 29
2 answers
because the outlier 77 is so much greater than the other values, it pulls the mean way up.
The 77 is the outlier (greatest value) so you must add every number and exclude the outlier for an accurate mean.