1. ©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

2. 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.

3. 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
Free from 3 5 4
Double Click 1 2 3 4 5 6

4. 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