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# Grouping Data

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by

## Mr Mattock

on 16 March 2018

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#### Transcript of Grouping Data

Grouping Data
Starter
State whether these situations would result in collecting discrete numerical or continuous numerical data.

Recording the shoe size of a group of people.
Recording the height of a group of people.
Recording the weight of a group of people.
Recording the number of people in cars passing the school.
Recording the amount of money spent in the school canteen.
Recording the number of GCSEs pupils pass at grade 4+ or equivalent.
Recording the time pupils spend doing their homework.
Main Activity 1
Grouping discrete data
Explain why this data collection sheet wouldn't be suitable for collecting shoe size data.

Design a more suitable collection sheet.
Starter
State whether these situations would result in collecting discrete numerical or continuous numerical data.

Recording the shoe size of a group of people.
Discrete
Recording the height of a group of people.
Continuous
Recording the weight of a group of people.
Continuous
Recording the number of people in cars passing the school.
Discrete
Recording the amount of money spent in the school canteen.
Discrete
Recording the number of GCSEs pupils pass at grade C+ or equivalent.
Discrete
Recording the time pupils spend doing their homework in class.
Discrete
Shoe size Tally Frequency
3 - 5
6 - 8
9 -11
12+
Grouping discrete data
Explain why this data collection sheet wouldn't be suitable for collecting shoe size data.

Design a more suitable collection sheet.
Shoe size Tally Frequency
3 - 5
6 - 8
9 -11
12+
This table doesn't allow for
half sizes between 5 and 6, 8 and 9 or 11 and 12.
Grouping discrete data
Design a more suitable collection sheet.
Shoe size Tally Frequency
2.5 - 5
5.5 - 8
8.5 -11
11.5+
Main Activity 1
Design data collection sheets for these situations using suitable groups.

Recording the number of people in cars passing the school.
Recording the number of GCSEs pupils pass at grade 4+ or equivalent.
Recording the amount of money spent in the school canteen.
L.O. - To understand how to design groups for discrete and continuous numerical data.
Grouping discrete data
Explain why this data collection sheet wouldn't be suitable for collecting height data.

Design a more suitable collection sheet.
Height (cm) Tally Frequency
150 - 159.9
160 - 169.9
170 - 179.9
180+
Grouping discrete data
Explain why this data collection sheet wouldn't be suitable for collecting height data.

Design a more suitable collection sheet.
Height (cm) Tally Frequency
150 - 159.9
160 - 169.9
170 - 179.9
180+
It is theoritically
possible to have someone
that is between 159.9 and 160 cm tall, or between 169.9 and 170, or between 179.9 and 180.
Grouping discrete data
Explain why this data collection sheet wouldn't be suitable for collecting height data.

Design a more suitable collection sheet.
Height (cm) Tally Frequency
150<h<160
160<h<170
170<h<180
180<h
Main Activity 2
Design data collection sheets for these situations, using suitable groups.

Recording the weight of a group of people.
Recording the time pupils spend doing their homework.
Main Activity 2
Activities
Activity

Key
Examples

Worked
Example 1
Worked
Example 2
Worked
Example 1
Worked
Example 2
4+
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