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Mean and Range
Mean and Range
3rd October 2024
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Primary Education
Lower Secondary (Key Stage 3)
Upper Secondary (Key Stage 4)
This lesson contains
41 slides
, with
interactive quizzes
and
text slides
.
Lesson duration is:
15 min
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Items in this lesson
Mean and Range
3rd October 2024
Slide 1 - Slide
In this lesson you're going to learn how to . . .
LO1
LO2
LO3
To find the mean using real data and given data
To find the range of a given set of data
To be able to explain what the range result tells you about the data
Slide 2 - Slide
Tell me what you know already know about the mean and the range
Slide 3 - Mind map
Slide 4 - Slide
To calculate an Average we need data so let's get some of our own!
In pairs you are going to take turns to stack Oreos and record the number you get in the table provided.
You will each do this twice and record your results in the table.
We will then share our results.
Slide 5 - Slide
MEAN
Add them all up and share them all out.
What does this mean?
Slide 6 - Slide
Find the mean of 7, 5, 7, 4, 8, 5.
A
7
B
6
C
4
D
5
Slide 7 - Quiz
Find the mean of 55, 23, 54, 12, 87, 33.
A
54
B
15
C
44
D
43
Slide 8 - Quiz
You have 2 routes to drive to work. Find the mean for each route.
Which route would you choose?
T
op Tip
Remember to press equals on your calculator before dividing.
Slide 9 - Slide
The table below shows the savings customers can make on their car insurance by switching. Work out the mean
savings
for new customers.
What do we need to work out first?
Slide 10 - Slide
Let's find the mean of our data and do questions from worksheet..
Any questions...please ask!
Slide 11 - Slide
The Range
The difference between largest and smallest number...
so we?
Subtract the smallest number from the biggest number
Range = Biggest - Smallest
Slide 12 - Slide
Calculate the range of this set of data:
5, 7, 2, 5, 4, 9, 3
A
3
B
7
C
5
D
2
Slide 13 - Quiz
Calculate the range of the following:
12, 4, 5, 0, 1, 6, 2
Slide 14 - Open question
Find the range of this data set:
5, 17, 7, 4, 6
A
5
B
9
C
1
D
13
Slide 15 - Quiz
Find the range of the number of selfies taken last month.
What does the range tell us about the number of selfies taken last month?
Slide 16 - Slide
What does the Range tell us?
The Range allows us to find out how spread out the values are.
The bigger the spread, the more the data VARIES or the more INCONSISTENT it is.
The smaller the spread, the less the data VARIES making it more CONSISTENT.
Slide 17 - Slide
What is the range of the numbers of missed appointments for 2015?
Slide 18 - Slide
What does this range tell us?
A
The data varies a lot and is inconsistent
B
The data is consistent
C
There was a large number of missed appointments
D
Little appointments were missed
Slide 19 - Quiz
The table below shows the results for the Blues Hotel last month.
Work out the range of the ratings for each category.
Slide 20 - Slide
Explain what these ranges show.
Slide 21 - Mind map
Try this:
https://wordwall.net/play/951/992/8526
Slide 22 - Slide
Let's work through some past paper questions now
Slide 23 - Slide
How did it go?
😒
🙁
😐
🙂
😃
Slide 24 - Poll
BINGO
On your grid place any nine numbers below into the grid (do not repeat numbers)
35 10 200 600
30
2 80 40
3
32 18 1
50 800 64 2500
Slide 25 - Slide
Mean of 150, 160, 290
200
Slide 26 - Slide
Range of 43, 32, 23, 13, 26
30
Slide 27 - Slide
Find the range of:
2, 15, 1, 20
18
Slide 28 - Slide
Mean of 1, 2, 4, 5
3
Slide 29 - Slide
Range of 30, 57, 89, 95, 108, 110
80
Slide 30 - Slide
Mean of 25, 5, 8, 3, 9
10
Slide 31 - Slide
Range of 52, 51, 43, 20
32
Slide 32 - Slide
Range of 45, 34, 12, 76, 56
64
Slide 33 - Slide
Mean of 2, 3, 1
2
Slide 34 - Slide
Range of 1000, 400, 500, 650
600
Slide 35 - Slide
Mean of 0, 0, 1, 2, 2
1
Slide 36 - Slide
Range of 12, 57, 60, 34, 812, 715
800
Slide 37 - Slide
The mean of 0, 5000
250
0
Slide 38 - Slide
The range of 12, 36, 37, 41, 46, 47
35
Slide 39 - Slide
Mean of 40, 40, 100
60
Slide 40 - Slide
The range of
23, 19, 27, 45, 59, 35, 37
40
Slide 41 - Slide