Median: middle score

- half of the data will fall below the median When data is placed in order… - half of the data will fall below the median - half of the data will fall above

4th place Median = 8

This means that the median falls half way between the 4th and 5th scores.

grades 30 3 73 29.5 5 70 29 65 28.5 2 60 28 10 58 27.5 48 27 6 43 26.5 37 26 32 25 24.5 24 4 21 23.5 1 17 23 16 22.5 11 22 7 21.5 20 Mode: 28

Median: 26.5 n = 73 n + 1 2 = 37 The 37th score is… grades 30 3 73 29.5 5 70 29 65 28.5 2 60 28 10 58 27.5 48 27 6 43 26.5 37 26 32 25 24.5 24 4 21 23.5 1 17 23 16 22.5 11 22 7 21.5 20 Median: 26.5 n = 73 n + 1 2 = 37 The 37th score is…

grades 30 3 73 29.5 5 70 29 65 28.5 2 60 28 10 58 27.5 48 27 6 43 26.5 37 26 32 25 24.5 24 4 21 23.5 1 17 23 16 22.5 11 22 7 21.5 20 Mean:  X n X =

grades 30 3 90 29.5 5 147.5 29 145 28.5 2 57 28 10 280 27.5 137.5 27 6 162 26.5 132.5 26 156 25 50 24.5 73.5 24 4 96 23.5 1 23 115 22.5 22 21.5 43 21 20 60

grades 30 3 73 29.5 5 70 29 65 28.5 2 60 28 10 58 27.5 48 27 6 43 26.5 37 26 32 25 24.5 24 4 21 23.5 1 17 23 16 22.5 11 22 7 21.5 20 Mean: 26.05  X n X = 1901.5 73 =

Median, mean, mode

mode

mode median mean

median mode mean