Probability Calculator
Kubatanidza maviri akazvimirira chiitiko kufungidzira: uye, kana, hapana.
Zvinyorwa zvinogadziridzwa paunenge uchinyora.
Nezve iyi kalkulator
example, if you have two independent events A and B, you can calculate the probability of both of them happening. 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 four
Zvimwe zvinobvunzwa zvakanyanya
Ndeupi mubvunzo watinoda kubvunza kuti tiwane kunyatsoita kwezvimwe zvinhu?
Kuti uwane mhedzisiro yacho, wedzera kuwanda kwezvikonzero zvacho: P(A and B) = P(A) · P(B). A 50% chiitiko uye 30% chiitiko zvakaita sezviri 0.5 × 0.3 = 0.15, kana 15%.
Chii chinonzi "independent" here?
Independent zvinoreva kuti chikonzero cheimwe chiitiko hachina mhedzisiro pamwe - sezviri muzvimwe zviviri zvakasiyana. Kana zviitiko zvinokonzera mumwe nomumwe (zviri kuenderana), izvi formulas hazvisi kutevedzera uye iwe unofanirwa kutevedzera kufungidzira.
Sei "A kana B" inofungidzirwa?
P(A or B) = P(A) + P(B) − P(A and B).Kubvisa kusangana kunodzivirira kuti mhedzisiro yakabatana irege kuverengerwa kaviri, saka mhedzisiro haizopereri 100%.
Ndeupi mubvunzo waungabvunza kuti: "Ndinogona sei kuwana mukana wekuti hapana chinhu chinoitika?"
Kuwedzera chances yese chiitiko hachizoitika: P (neither) = (1 - P (A)) × (1 - P (B)).For 50% uye 30% chiitiko ichi 0.5 × 0.7 = 0.35, kana 35%.
Chii chinonzi chiyero pakati pe "A kana B" ne "imwe chete yezvimwe"?
"A kana B" inosanganisira nyaya apo vaviri kuitika, apo "mumwe chete" inobvisa. "Mumwe chete" imwechete P (A kana B) minus P (A uye B), kusanganisira maviri zvakasiyana-siyana-kana zvakaitika asi kwete kusangana.
Chii kana zviitiko zviviri hazvisi zvakazvimira?
Kana imwe chiitiko chinokonzera vamwe iwe unofanira kutarisirwa kufungidzira, P (A uye B) = P (A) × P (B | A), uye iyi calculator achazviita kukwira kana kuderera kubatanidzwa zviitiko.
Chii chinoita kuti izvi zvive zvakawandisa kupfuura 100%?
Mamwe mazita ezvinyorwa zvekare zvakadai se "A kana B" anogona kunge ari madiki, asi havana kusvikira 100% nekuti kusangana kwacho kunodzikira.
API — kushandisa iyi kalkulator kubva code
Chiva iyi calculator semahara JSON endpoint - hapana chikuru zvinodiwa. Kutumira nzvimbo zviwanikwa pasi separameter query kana JSON. Tora yakazara API docs →
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);Zviratidzo zvemubvunzo ndezvekufungidzira kwechinangwa chekudzidzisa chete, kwete zvemari, zvehutano kana zvemari.