©2009 – Not to be sold/Free to use Stage 4 Year 9 Grouped Data Dot Plots Stem & Leaf Plots Press Ctrl-A ©2009 – Not to be sold/Free to use

Displaying Data - Dot Plots Dot plots are useful only for small sets of data. 7, 4, 6, 3, 3, 5, 4, 6, 5, 5, 4, 5. 1 2 3 4 5 6 7

Displaying Data - Dot Plots Exercise They are useful for small sets of data Exercise: Roll a dice and record on a dot plot. 1 2 6 www.pptalchemy.co.uk/Dice2.html Free from 3 5 4 Double Click 1 2 3 4 5 6

Displaying Data - Stem & Leaf Key: Stem Leaf 2 5 Stem Leaf = 25 2 3 5 1 1 1 4 7 2 1 2 5 5 8 9 3 2 7 4 7 8 25 22 17 25 28 21 29 50 48 14 11 11 30 37 47 30 32 2 5 3 5 Finished