Indo · Kĩtarani

Kĩtarani kĩa mbeca cia mũthako

Kĩtarani gĩkĩ kĩa mbeca cia mũthako wa rureti nĩkĩonanagia mũtaratara wa mbeca ũrutaga mbeca ciigana atĩa o thaa harĩ mbeca cia beti na ihenya rĩmwe, na ũikaraga ihinda rĩigana atĩa kaingĩ.

Mbeca cia mũthako

Mbeca cia beti

Mĩthiũrũrũko / thaa

beti thĩinĩ wa mbeca cia mũthako

hasara ĩrĩa yetagĩrĩrwo / thaa

−$13.51

ũgarũrũku wa kawaida / thaa (1σ)

±$70.71

thaa harĩ ihenya rĩrĩa rĩetagĩrĩrwo

thaa 37

mbeca cia beti / thaa

$500

uumithio

2.70%

Gũthoma mũico

Ũkĩiga $10 o mũthiũrũrũko na mĩthiũrũrũko 50 o thaa ũbetaga $500 o thaa na ũkoorwo nĩ $13.51 ciacio kũringana na gatagatĩ. Ũgarũrũku wa thaa ĩmwe nginya ĩrĩa ĩngĩ (±$70.71) nĩ mũnene gũkĩra hasara ĩrĩa yetagĩrĩrwo mũno, na nĩkĩo mahinda ma mũthako moneka ta ma mweke no mĩaka ti ũguo. “Thaa harĩ ihenya rĩrĩa rĩetagĩrĩrwo” nĩ gatagatĩ; thaa ĩmwe njũru no ĩrute gĩcunjĩ kĩa gatatũ kĩa mbeca cia mũthako cia $500.

Mũtaratara na maũndũ marĩa metĩkĩtio

Beti cia marĩhi maigana. Hasara ĩrĩa yetagĩrĩrwo = mbeca cia beti × mĩthiũrũrũko / 37. Ũgarũrũku = mbeca cia beti × √mĩthiũrũrũko (σ ≈ 1 o gĩthimo harĩ marĩhi maigana).