The following data set indicates the number of people per day who visited a website over a random sample of eleven days: 559 566 574 579 579 579 581 583 584 590 592

Q.2.1 Calculate the following, using the appropriate formulae and/or methods:

Q.2.1.1 The mean (compute to three decimal places). Interpret your answer. (2)

Q.2.1.2 The first quartile. Interpret your answer. (3)

Q.2.1.3 The variance. (The relevant formula must be used. No marks will be awarded if the answer is simply obtained directly from a calculator) (3)

Q.2.1.4 What is the coefficient of variation for this data set? (2)