1. ©G Dear2009 – Not to be sold/Free to use
Applied Mathematic
(Preliminary General 1)
Data and
Statistics
Organizing
Data
Stage 6 - Year 11
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©G Dear2009 – Not to be sold/Free to use

2. Processes of Statistical Inquiry
Organizing Data
In a Class Survey we will ask …
Favourite Car Company?
Categorical Data
Ford
Holden
Why?
Subaru
The data is divided into
Categories
Toyota
Nissan
and is not numerical.
Other
Can’t find Range.

3. Frequency Distribution Table
Processes of Statistical Inquiry
Organizing Data
Class Survey
Favourite Car Company?
Frequency Distribution Table
Company Tally Frequency
Ford 11 14 13 12 16 17 10 19 18 21 15 1 20 22 23 25 9 2 24 7 8 3 5 6 4
Holden 11 10 19 17 12 18 1 16 15 14 13 21 23 25 24 22 20 3 4 2 5 6 8 7 9
Subaru 11 19 13 10 18 17 1 16 15 12 14 21 23 25 24 20 22 4 3 2 5 9 6 8 7
Click Here
Toyota 11 15 13 12 16 21 19 18 17 14 10 1 22 3 23 25 2 20 24 8 9 4 7 6 5
Nissan 11 15 14 16 21 13 19 18 17 10 12 1 24 23 25 8 9 22 2 6 3 5 7 4 20
Other 11 15 14 17 19 18 13 16 10 12 21 1 25 23 22 24 8 4 3 2 5 6 9 7 20

4. Processes of Statistical Inquiry
Organizing Data
In a Class Survey we will ask …
Range = = 4
Student Age?
Numerical Data 15 16
Why? 17
The data is divided into
Numbers 18 19
and is not text.
>19
Can find Range.

5. Frequency Distribution Table
Processes of Statistical Inquiry
Organizing Data
Class Survey
Student Age?
Frequency Distribution Table
Age Tally Frequency 15 11 14 13 12 16 17 10 19 18 21 15 1 20 22 23 25 9 2 24 7 8 3 5 6 4 16 11 10 19 17 12 18 1 16 15 14 13 21 23 25 24 22 20 3 4 2 5 6 8 7 9 17 11 19 13 10 18 17 1 16 15 12 14 21 23 25 24 20 22 4 3 2 5 9 6 8 7
Click Here 18 11 15 13 12 16 21 19 18 17 14 10 1 22 3 23 25 2 20 24 8 9 4 7 6 5 19 11 15 14 16 21 13 19 18 17 10 12 1 24 23 25 8 9 22 2 6 3 5 7 4 20
>19 11 15 14 17 19 18 13 16 10 12 21 1 25 23 22 24 8 4 3 2 5 6 9 7 20

6. This is the correct way to do a tally so as to avoid errors!
Processes of Statistical Inquiry
Organizing Data
5, 12, 15, 59, 38, 52, 43, 42, 33, 7,
34, 35, 24, 45, 55, 43, 12, 17, 21, 36, 22, 12, 4, 11, 57, 24,
6, 23, 34, 46, 35, 24, 13, 29, 39, 43, 28, 38, 41, 21, 23, 24.
Score Tally Frequency
This is the correct way to do a tally so as to avoid errors!
0-9 4
10-19 7
20-29 11
30-39 9
40-49 7
50-59 4