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Additional topic - Sigma - Coggle Diagram
Additional topic - Sigma
Is denoted as:
For example, if:
Lets say the total income of five people is:
2.1
2.2
1.1
1.2
In general if a is a constant we have:
4
In general if there are two variables:
5
Absolute values
7
First we take the squares and then add the results
3.1
We also want to know the total of the squared incomes of the five persons in the sample
3.2
Proof
6