Isilinganiso se-Arithmetic inani elijwayele ukusetshenziswa ezibalweni, elibalwa njengesilinganiso samanani samanani.
Uma sineqoqo le-
n
amanani. Ake sibabize
x1, x2, …, xn.
Ukuze uthole isilinganiso, engeza konke
xi
bese uhlukanisa umphumela ngo-
n.
\(
\overline{x} = \dfrac{x_1 + x_2 + ... + x_n}{n}
\)