Multiply the no. by itself. Ex 5 squared is 25.
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r2
The squared symbol. (That's the little 2 next to the number.)
on the top right part of the number being squared and remember to make it smaller than the number being squared
use symbol x²
Yes, sigma squared (σ²) represents the variance of a population in statistics. Variance measures the dispersion of a set of values around their mean, and it is calculated as the average of the squared differences from the mean. In summary, σ² is simply the symbol used to denote variance in statistical formulas.