Impuzandengo yimibare nigiciro gikunze gukoreshwa mubarurishamibare, kibarwa nkimpuzandengo yimibare yagaciro.
Niba dufite urutonde rwa
n
indangagaciro. Reka tubahamagare
x1, x2, …, xn.
Kugirango ubone impuzandengo, ongeramo byose
xi
hanyuma ugabanye ibisubizo by
n.
\(
\overline{x} = \dfrac{x_1 + x_2 + ... + x_n}{n}
\)