Filetype Power Point PPTX | Posted on 29 Aug 2022 | 3 years ago
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240x Filetype PPTX File size 0.12 MB Source: www.rgsmparanda.org
Mean, Median, Mode are
all types of average. An
average summarises
groups of data.
Mean
Average often means the ‘mean’
Mean = total of the numbers divided
by how many numbers.
Class shoe sizes: 3, 5, 5, 6, 4, 3, 2, 1, 5, 6
Add up the numbers:
3 + 5 + 5 + 6 + 4 + 3 + 2 + 1 + 5 + 6 = 40
Divide by how many numbers:
40 ÷ 10 = 4
The class mean shoe size is 4
Median
Median is the middle value
Put the numbers in order
Choose the number in the middle of
the list.
If there are 2 numbers in the middle
then it is halfway between them.
Class shoe sizes: 3, 5, 5, 6, 4, 3, 2, 1, 5, 6
Put in order: 1, 2, 3, 3, 4, 5, 5, 5, 6, 6
The class median shoe size is 4.5
Mode
Mode is the most common number
Put the numbers in order
Choose the number that appears the
most frequently.
Sometimes there may be more than
one mode.
Class shoe sizes: 3, 5, 5, 6, 4, 3, 2, 1, 5, 6
Put in order: 1, 2, 3, 3, 4, 5, 5, 5, 6, 6
The class modal shoe size is 5.
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