You are carrying out a research about how many pizzas are consumed by teenagers, in the age range from 13 to 17. A sample of 20 boys/girls in that age range is taken, and the number of pizzas eaten per month is given in the following table:

4 12 7 11 9 7 8 13 16 11 4 7 5 7 11 7 7 41 9 14

• Compute mean, median, and standard deviation.

• Is there any odd observation in the dataset? If so, get rid of it and repeat the calculation of mean and median. Which one is more affected by an extreme value?