Questão 3307695

\(\frac{1}{n}\sum_{i=1}^nX_i\)

\(\frac{1}{n}\sum_{i=1}^n\left[X_i^2\right]-\overline{X}^2\)

\(\frac{1}{n}\sum_{i=1}^n\left[X_i^2\right]\)

\(\sum_{i=1}^n\left[X_i^2\right]-\overline{X}^2\)

\(\frac{1}{n}\overline{X}^2-\sum_{i=1}^n\left[X_i^2\right]\)