The numbers’ sets: median, mode, average

Ex. 9 / For each of the following sets of data find the mode, median and average.

(a) {2, 7, 11, 15, 17, 21, 24}

Average = 97/7 ≈ 13.9
Mode = all numbers
Median = 15

(b) {9, 16, 25, 30, 44, 51, 60, 65}

Average = 37.5
Mode = all numbers
Median = 37 (74/2)

(c) {56, 23, 19, 43, 35, 63, 28, 45, 33}

{19, 23, 28, 33, 35, 43, 45, 56, 63}

Average = 38.3
Mode = all numbers
Median = 35

(d) {39, 61, 53, 72, 80, 34, 46, 59, 81, 30}

{30, 34, 39, 46, 53, 59, 61, 72, 80, 81}

Average = 55.5
Mode = all numbers
Median = 56 (112/2)

Ex. 10 / The wingspans (to the nearest m) of 15 aircrafts that were on display during the Singapore Airshow are listed below. Find mode, average and median.

21 33 14 12 8
40 36 50 21 9
33 26 17 33 58

{8, 9, 12, 14, 17, 21, 21, 26, 33, 33, 33, 36, 40, 50, 58}

Average = 27.4 (411/15)
Mode = 33
Median = 26