A group of thirty college students was asked how many DVDs they had in their collection. The results are as follows. 12 25 34 17 12 18 29 34 45 6 15 925 23 29 22 20 32 15 15 19 12 26 27 27 32 35 42 26 25 Draw a stem and leaf diagram to represent these data. a Find the median. b Find the lower quartile. c Find the upper quartile.

AppendixLO1