Kalkile
Konbine de pwobabilite evènman ki endepandan: ak, oswa, pa gen okenn.
Rezilta yo mete ajou pandan w ap ekri.
Atik sa a
example, if the probability of two independent events A and B is 50%, then the probability of both happening (A and B) is 50%, and the probability of neither happening (A or B) is 50%. The probability calculator uses the following rules: P(A and B) = P(A) × P(B); P(A or B) = P(A) + P(B) − P(A and B); P(neither) = (1 − P(A)) × (1 − P(B)); and "only A" is P(A) − P(A and B). A pie chart splits the sample space into the four mutually exclusive outcomes (both, A only, B only, neither). The probability calculator uses the following rules: P(A and B) = P(A) × P(B); P(A or B) = P(A) × P(B); P(neither) = (1 − P(A)) × (1 − P(B)); and "only A" is P(A) − P(A and B).The probability calculator uses the following rules: P(A) = 50% and P(B) = 50% and P(B) = 50%.The probability calculator uses the following rules: P(A) = 50% and P(B) = 50%.The probability calculator uses the following rules: P(A) = 50% and P(B) = 50%.The probability calculator uses the following rules: P(A) = 50% and P(B) = 50%.The probability calculator uses the following rules: P(A) = 50% and P(B) = 50%.The probability calculator uses the following rules: P(A) = 50% and P(B) = 50%.The probability calculator uses the following rules: P(A) = 50% and P(B) = 50%.The probability calculator uses the following rules:
Kesyon ki poze souvan
Ki jan pou m jwenn pwobablite de de evènman ki dewoule tou de?
Pou evènman endepandan, multipliez probabilite yo: P(A and B) = P(A) · P(B). Yon evènman 50% ak yon evènman 30% tou de rive se 0.5 × 0.3 = 0.15, oswa 15%.
Ki sa ki vle di "indipendent"?
Inyon an vle di ke rezilta yon evènman pa gen okenn efè sou lòt la — tankou de coin flips separe. Si evènman an enfliyanse youn lòt (yo depandan), sa yo fòmil pa aplike ak ou bezwen kondisyonèl probabilite.
Ki jan "A oswa B" yo kalkile?
P(A or B) = P(A) + P(B) − P(A and B).Soustraksyon soulajmanpeche rezilta a pataje soti nan dwe konte de fwa, se konsa rezilta a pa janm depase 100%.
Ki jan pou m jwenn pwobabilite pou nenpòt nan de evènman sa yo rive?
Multipliez chans pou chak evènman pa rive: P (ni youn) = (1 − P (A)) × (1 − P (B)). pou yon 50% ak yon 30% evènman sa a se 0.5 × 0.7 = 0.35, oswa 35%.
Ki diferans ki genyen ant "A oswa B" ak "se sèlman youn nan yo"?
"A oswa B" gen ladan ka kote de a rive, pandan ke "yon sèl" ekskli li. "Yon sèl" egal a P (A oswa B) mwens P (A ak B), konte de eksklizif-oswa rezilta men pa soulajman.
Ki sa ki si de evènman yo pa endepandan?
Si yon evènman afekte lòt la, ou bezwen pwobabilite kondisyonèl, P(A ak B) = P(A) × P(B | A), ak sa a kalkulatè pral sou-estime oswa sous-estime chans konbine.
Èske pwobabilite sa yo ka ajoute jiska plis pase 100%?
Kat rezilta ki eksklizif — tou de, A sèlman, B sèlman ak pa gen okenn — toujou totalize egzakteman 100%. Figi endividyèl tankou "A oswa B" ka gwo, men yo pa janm depase 100% paske soulajman an se soustraksyon.
API — itilize sa a calculateur soti nan kòd
Apèl sa a calculateur kòm yon gratis JSON pwent-de-fini - pa gen okenn kle ki nesesè. Envoye valè jaden anba a kòm paramèt kesyonè oswa JSON. Li dokiman API a an antye →
Endpoint
GET https://calculator.free/api/v1/probability/curl
curl "https://calculator.free/api/v1/probability/?pa=50&pb=30"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/probability/?" + new URLSearchParams({
"pa": "50",
"pb": "30"
}));
const data = await r.json();
console.log(data.results);Rezilta yo se estimasyon pou kòmandman jeneral sèlman, pa finansye, medikal oswa konsèy taks.