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Cumulative Frequency

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by

Mr Mattock

on 9 January 2016

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Transcript of Cumulative Frequency

Cumulative Frequency
Cumulative Frequency
Cumulative Frequency graphs
L.O. - Draw a cumulative frequency graph from a grouped frequency table and use it to estimate values (Level 7).
Cumulative Frequency = Accumulate frequencies
Cumulative Frequency
Cumulative Frequency = Accumulate frequencies
Cumulative Frequency graphs
How many people weigh less than 53 kg?

The ideal weight is between 65 and 75 kg for this group of people. How many people are not ideal weight?

How many people are over 68 kg?
RAG sheet
Choose either the red, amber or green table; draw the correct axes and complete the question.
8 pupils got an A grade.
5 pupils can hold their breath for more than
58 seconds, out of 30, which is 16.6...%
Approximately 66 out of 90 have arms between 46 and 55 cm, which is 73.3...%
Dice of Ultimate Power

1) Give a key word for the lesson.
2) Summarise one key point for the
lesson.
3) Explain one thing you have learned this
lesson.
4) State one thing you still don't understand following this lesson.
5) Suggest one thing you would like to find out
based on this lesson.
6) Free choice from 1 to 5, or another you make
up.
START ANSWER

55 >> +9 , ÷8 , x7 , -14 , ÷3 , ÷2 , square , +11 , ÷5 ………….

14 >> +16 , x2 , +3 , ÷9 , -5 , square , square , +20 , ÷9 ………….

27 >> ÷9 , square , x6 , -40 , x2 , +8 , ÷6 , +24 , ÷5 ………….

10 >> square , ÷4 , ÷5 , +3 , square , -10 , ÷6 , +4 , x3 ………….

70 >> ÷2 , +5 , ÷5 , +4 , x5 , ÷10 , square , +12 , ÷6 ......…….

Starter
START ANSWER

55 >> +9 , ÷8 , x7 , -14 , ÷3 , ÷2 , square , +11 , ÷5 …
12


14 >> +16 , x2 , +3 , ÷9 , -5 , square , square , +20 , ÷9 …
4
….

27 >> ÷9 , square , x6 , -40 , x2 , +8 , ÷6 , +24 , ÷5 …
6
….

10 >> square , ÷4 , ÷5 , +3 , square , -10 , ÷6 , +4 , x3 …
39
….

70 >> ÷2 , +5 , ÷5 , +4 , x5 , ÷10 , square , +12 , ÷6 ...
8
...

Starter
Reminder on last time
Median and Interquartile range
Find the median
weight.



Find the interquartile range of the weights
Median and Interquartile range
Find the median
weight.

64 kg

Find the interquartile range of the weights

LQ = 59 kg

UQ = 71 kg

IQR = 12 kg
Key
Examples

Activities
Activity
Answers

Median: 29 marks
LQ: 19.5 marks UQ: 36.5 marks
IQR: 36.5 - 19.5 = 17 marks
Median: 42 seconds
LQ: 29.5 seconds UQ: 53 seconds
IQR: 23.5 seconds
Median: 49.8 cm
LQ: 47.5 cm UQ: 52.7 cm
IQR: 5.2 cm
Full transcript