Introduction to Statistics

Our introduction to statistics has taken place over the past few mornings. Moff has ben our maths teacher at Wambana and he has been doing a geat job. He has taught us about the mean, medium, mode, range, Q1, Q3 and IQR. These are all statistical terms that help sort out sets of raw data.

This morning we focused on the 5.5km run. The 5.5km run is from Wambana to the end of the jetty and back. Thes are our best results in minutes:

Wardli 3: 23, 25, 24, 35, 36, 41 Sorted: 23, 24, 25, 35, 36, 41
Wardli 4: 23, 24, 24, 25, 40, 43 Sorted: 23, 24, 24, 25, 40, 43
Wardli 5: 33, 24, 32, 27, 34, 24 Sorted: 24, 24, 27, 32, 33, 34

We can organise this raw data into a dot plot:

23 x x
24 x x x x x
25 x x
26
27 x
28
29
30
31
32 x
33 x
34 x
35 x Lowest= 23min
36 x Highest= 43min
37 Range= 20min
38 Medium= 26min
39 Mode=24min
40 x Mean= -
41 x Q1= 24min
42 Q3= 35min
43 x IQR= 11min

This shows we have two distinct groups. One between 23 and 27 and another between 32 and 43. This is called a Binomial dot plot.