Respuesta :
The first step to be performed in the following mathematical expression, Σx² is; Square each score
What is the sum of the squares of the data?
In statistic, we know that;
Mean = Σx/n
where
Σx is sum of all data
n is the sample size of the data
Now, there are other expressions such as mean deviation, variation, standard deviation e.t.c
However, when we see the expression Σx², it means the sum of the square of each score. Thus, the first step to get it is to square all the scores.
Thus, we conclude that the first step to be performed in the following mathematical expression, Σx² is; Square the scores
Read more about Sum of squares at; https://brainly.com/question/12402189
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