1. Box Plots Example The number of passengers in a 72-seater aeroplane was noted on each of its 20 flights in one day. 48, 54, 72, 21, 37, 45, 72, 41, 59, 63, 54, 59, 68, 72, 70, 64, 41, 32, 24, 31 a)Work out the three quartiles for this data. b)Draw a box plot for this data.

2. Example The Stem and leaf diagram below represents the scores obtained by 40 boys in a test. a)Find the median & interquartile range for this information b)Draw a box plot for the data. 055688 1135677 2225899 30126889 411145677 50225678 60

4. Example The cumulative frequency diagram opposite represents the scores obtained by 40 girls in a test. a)Find the median & interquartile range for this information b)Draw a box plot for the data. 10 20 30 40 102030405060 0

5. 1020300 Example The box plots below represent the scores obtained by Alan and Robert in a game of golf. Comment on their findings Alan Robert