Question 10

1. The ages of 14 children at a party are given as follows: 12, 6, 5, 4, 8, 13, 11, 2, 5, 7, 1, 9, 10 and 3. Calculate the:

(i) range;
(ii) semi- interquartile range;
(iii) mean.

2. Calculate, correct to three significant figures, the standard deviation.