The summation is Σ(xᵢ-4)², i=1,2,3...
What is summation ?
When a group of numbers, known as addends or summands, are added together in mathematics, the outcome is their sum or total. Functions, vectors, matrices, polynomials, and, generally, any sort of mathematical object on which an operation labelled "+" is defined can all be added together, in addition to numbers.
Series are summations of infinite sequences. They are related to the idea of limit but are not covered in this article.
Let x serve as the definition of a score.
Each score will be xi, i.e. x1, x2, x3, x4... for the first four consecutive scores, and so on.
By deducting 4 from each score, you get xi-4.
Squaring the Resulting Value = (xi-4)²
The sum of the squared numbers is equal to (xi-4)²
where i=1, 2, 3.
Σ(xᵢ-4), The set of instructions written in summation notation is 2.
Learn more about summation, by the following link.
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