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 values
n: 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

Example

Find the mean of the given values.

Score	Frequency
0	1
1	1
2	4
3	7
4	5
5	2

Solution

Score	Frequency	(Score)⋅(Frequency)
0	1	0
1	1	1
2	4	8
3	7	21
4	5	20
5	2	10

[1]

(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

[1]

Frequency Table

[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).

[3]

Add (Frequency).