Question

Найти дисперсию ряда 0 1 0 8 0 4

Answer 1

$\overline{X} = \frac{0+1+0+8+0+4}{6} = \frac{13}{6} \\ D = \frac{(0- \frac{13}{5})^2+(1-\frac{13}{5})^2 + (0-\frac{13}{5})^2 + (8- \frac{13}{5})^2+(0- \frac{13}{5})^2+(4- \frac{13}{5})^2}{6} = \frac{53,96}{6} = 8 \frac{5,96}{6} \approx 8,99$