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Mean
The mean in statistics, also known as the average, is a measure of central tendency that represents the sum of all
values in a dataset divided by the number of values. It provides a single value that summarises the entire dataset,
offering an indication of the typical value.
Mean is an essential concept in statistics. The mean is the average value of a group of numbers.
MEAN Direct Method
(Individual Series):
1. Find ∑x by adding all the values
Wages
(x) ∑x = 1500
100
2. Find total number of items (N)
200
300 N=5
400
3. Apply formula
500 ∑
∑ x = 1500 X = N x = 1500 = 300
5
MEAN (Discrete Series): Direct Method
(Frequency Array)
Wages f fx 1. Find fx
(X)
2. Find ∑ fx and ∑ f
100 2 200
200 1 200 3. Apply formula
300 3 900 X = ∑ fx
400 3 1200 ∑ f
500 1 500 = 3000
10
∑f =10 ∑fx= 3000
= 300
284 Touchpad Artificial Intelligence (Ver. 3.0)-XI

