I want an explanation for this example:

Consider the following set of data representing number of error messages per hour recorded during the testing of a computer program.

18, 11, 14, 10, 8, 9,11

Answer the questions below:

Note: Do not include units for any parts of this question.

a) What is the mean? (Round to one decimal place, if necessary.)

b) What is the mode?

c) What is median?

d) Find the standard deviation. (Round to one decimal place, if necessary.)

e) Find IQR.

f) Determine if the data contains any mild outliers. (if there are no mild outliers, enter none in answer box, if there is one, enter that number)

g) Determine if the data contains any extreme outliers. (if there are no extreme outliers, enter none in answer box, if there is one, enter that number)