class ages

gysgtclarke
ClassagesSTUDENT1.xls

Class ages

Mean and Standard Deviation for 5 Learning Teams in a RES 351 Class.
Class Average
Team1 Team2 Team3 Team4 Team5
24 35 31 35 44
31 34 24 44 27
30 24 27 31 25
47 22 24 42 27
29 24 21 21
25
32.2
Mean
Sample Stand Deviation
Skewness
Note that you go to "Insert" then "Function" then "Average"
to get the formula for the mean.
For the team standard deviations, do the same thing and then use the STDEV function (standard deviation for a sample)
For the class total standard deviation, use the STDEVP function, which is for a population.
Now, try doing the Skewness calculation on your own in the yellow highlighted area.