|Age at last Birthday||f||Age to nearest Birthday||f|
1. Calculate the mean and median on both sets of data.
2. Calculate IQR and the standard deviation and interpret your results.
3. If the 11:00 statistics class has a class average of
70, a standard deviation of 2 and
a normal distribution, answer the following questions:
If you score 74 in the 11:00 class, how many score higher than you?
There are 100 people in the 11:00 class. Your roommate scored 70 and you scored 72. How many people scored more than your roommate but less than you?
4. Interpret the standard deviation for these bank balances:
Group A has mean of $40 and s of $2 and normal distribution.
Group B has mean of $40 and s of $2 and smooth unimodal distribution.
Group C has mean of $40 and s of $2 and unknown distribution.
Group D has mean of $40 and s of $30 and normal distribution.
table of contents