Mean (Statistics)
See how to find the mean of the given values.
2 examples and their solutions.
Mean (Statistics)
Formula
(mean) = (sum)n
(sum): Sum of the valuesn: Number of the values
Mean is one of the ways to represent the whole values.
Median
Mode
Example
Find the mean of the given values.
60, 70, 80, 90, 100
Solution 60, 70, 80, 90, 100
(sum) = 60 + 70 + 80 + 90 + 100
= 130 + 170 + 100
= 300 + 100
= 400
(mean) = 4005
= 80
= 130 + 170 + 100
= 300 + 100
= 400
(mean) = 4005
= 80
Close
Example
Find the mean of the given values.
Solution Score | Frequency |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 7 |
4 | 5 |
5 | 2 |
Score | Frequency | (Score)⋅(Frequency) |
---|---|---|
0 | 1 | 0 |
1 | 1 | 1 |
2 | 4 | 8 |
3 | 7 | 21 |
4 | 5 | 20 |
5 | 2 | 10 |
(sum) = 0 + 1 + 8 + 21 + 20 + 10 - [2]
= 9 + 41 + 10
= 50 + 10
= 60
n = 1 + 1 + 4 + 7 + 5 + 2 - [3]
= 2 + 11 + 7
= 13 + 7
= 20
(mean) = 6020
= 3
[2]
Find the values of (Score)⋅(Frequency).
0⋅1 = 0
1⋅1 = 1
2⋅4 = 8
3⋅7 = 21
4⋅5 = 20
5⋅2 = 10
Then add (Score)⋅(Frequency).
0⋅1 = 0
1⋅1 = 1
2⋅4 = 8
3⋅7 = 21
4⋅5 = 20
5⋅2 = 10
Then add (Score)⋅(Frequency).
[3]
Add (Frequency).
Close