Answer Happy

(a) Find the mean and standard deviation
(b) Find the median and interquartile range
A sport officer studied the 100 meters sprint training performances of badminton and volleyball athletes in a university. The time for the athletes to complete the 100 meters sprint training was recorded and it is displayed as a back to back stem and leaf plot as below. 1/2: represents 1.2, leaf unit: 0.1 Badminton Volleyball 1 3 (3) 5 1 91019 82 11 25 553 12 48 765213 48 1/14 1258 115 12 | 16 35 | 171 1 3 5 (2) (4) 3 2 n: 11 14 (a) Find the mean and standard deviation of the time taken for badminton athletes and volleyball athletes. (4 marks) (b) Find the median and interquartile range of the time taken for badminton athletes and volleyball athletes. (4 marks)