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20003164
Histograms and frequency density
Description
GCSE Maths (probability and statistics) Mind Map on Histograms and frequency density, created by lizabeth rawson on 30/10/2019.
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maths
probability and statistics
gcse
Mind Map by
lizabeth rawson
, updated more than 1 year ago
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Created by
lizabeth rawson
almost 5 years ago
22
3
0
Resource summary
Histograms and frequency density
histogram = bar chart where the bars can be different widths
y axis = frequency density
frequency density = frequency / class width
frequency = frequency density x class width = area of bar
Example
this table and histogram show the lengths of beetles in a garden
use the histogram to find the missing entry in the table
the frequency = the frequency density x the class width
so 18 - 15 = 3 = class width
frequency density = 8
8 x 3 = 24
the missing value is 24
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