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Mean and Frequency Tables

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by

Mr Mattock

on 20 June 2017

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Transcript of Mean and Frequency Tables

Mean and Frequency Tables
Starter
The table below shows the results of rolling a fair die.
Mean
The table shows the results of rolling a fair die, find the mean roll.
L.O. - Find and use the mean of data organised into frequency tables.
How many times did they roll:

(a) 1?
(b) more than 4?
(c) the die?
Starter
The table below shows the results of rolling a fair die.
How many times did they roll:

(a) 1?
= 7
(b) more than 4?
= 12
(c) the die?
= 30
Mean
The table shows the results of rolling a fair die, find the mean roll.
1 x 7 = 7
2 x 3 = 6
3 x 7 = 21
4 x 1 = 4
5 x 4 = 20
6 x 8 = 48
Total of all rolls = 106

Mean roll = 106
30
= 3.53
Main Activity
Copy the tables and find the mean for each.
Red
Amber
Green
Main Activity 2 Answers
Red
Mean = 7.25
Amber
Mean = 3.4318
Green
Mean = 13.42... passengers.
Key
Examples

Actvities
Activity
Answers

Worked
Example

Mean from Table
Find the mean shoe size
Mean from Table
Find the mean shoe size
Worked
Example

5 x 8 + 6 x 9 + 7 x 12 + 8 x 10 + 9 x 0 =
40 + 54 + 84 + 80 + 0 = 258

258/29 = 8.897
Plenary
Complete the comparison sheet
Plenary
Complete the comparison sheet
Average shoe size is higher on Wednesday (1 Mark)

The range of shoe sizes is higher on Wednesday (1 Mark)
Full transcript