I-Calculator yonikezelo oluqhelekileyo
Fumana uxinano lokungalindelekanga nokungalindelekanga okuninzi kwexabiso eliqhelekileyo.
Iinketho ze projekti
Malunga nale Calculator
the standard-normal distribution, the probability density at x is equal to the cumulative probability P(X ≤ x) (the area under the curve to the left), the right-tail probability P(X ≥ x) and the equivalent z-score. The standard-normal distribution is the classic symmetric bell curve that describes heights, measurement errors, test scores and countless other natural quantities. Given a value x, a mean μ and a standard deviation σ, this calculator returns the probability density at x, the cumulative probability P(X ≤ x) (the area under the curve to the left), the right-tail probability P(X ≥ x) and the equivalent z-score, and plots the curve. The standard-normal distribution is the classic symmetric bell distribution.Internally it converts x to a z-score, z = (x − μ) / σ, then evaluates the standard-normal cumulative distribution with an accurate error-function approximation. The standard-tail probability P(X ≤ x) is about 90.9% and the right-tail P(X ≥ 120) is about 9.1%. The standard-normal distribution is the classic symmetric bell distribution.
Imibuzo ebuza rhoqo
Yintoni utshintsho phakathi kwe-pdf ne-cdf?
Uxinzelelo lokungalindelekanga (pdf) luphakamo lwegophe lentsimbi kwi x; ayikho ukwenzekayo ngokwalo. Unikezelo oludityanisiweyo (cdf) luyindawo engaphantsi kwegophe ukuya kwi x, enika ukwenzeka kwexabiso kwi okanye ngaphantsi kwe x.
Kutheni ukwenzeka kwexabiso elichanekileyo ku zero?
Unikezelo oluqhubekayo olufana noluqhelekileyo, naliphi na incopho eyiyo epheleleyo inethuba elipheleleyo - kuphela amanqanaba anethuba elipheleleyo. Le yisizathu sokuba sixelele uxinzelelo kwi x kunye nendawo epheleleyo endaweni ye P(X = x).
Yintoni imithetho ye68-95-99.7?
Unikezelo oluqhelekileyo malunga ne 68% yexabiso lingaphakathi kokungalingani okuqhelekileyo kwexesha eliphakathi, 95% ngaphakathi kwesibini ne 99. 7% ngaphakathi kwethathu. Le yindlela ekhawulezayo yokujonga ukuba ixabiso linjani ngaphandle kobalo lwendawo echanekileyo.
Ndiyifumana njani inyaniso phakathi kwexabiso elinye nelinye?
Ngenisa ixabiso eliphantsi njenge x nexabiso eliphezulu njenge x2; i kalkuleta ibuyisela i P( x ≤ X ≤ x2) ngokususa ukwenzeka okuninzi kwinto ephantsi kwinto ephezulu.
Yintoni utshintsho phakathi konikezelo oluqhelekileyo kunye nonikezelo oluqhelekileyo oluqhelekileyo?
Ixabiso eliqhelekileyo linikezelo oluqhelekileyo ngexabiso eliphakathi le 0 nexabiso eliqhelekileyo lokutshintsha le 1. Ukutshintsha nayiphi na ixabiso kwi z- score yayo iimaphu kuyo ixabiso eliqhelekileyo eliqhelekileyo, eli sixhobo sibala ukwenzeka kweempawu ze μ ne σ.
Ingaba i-data yam kufuneka ibe iqhelekileyo ngokupheleleyo?
Akukho data eyiyo eqhelekileyo, kodwa iziphumo zithembekile xa i data ijikeleza i-bell-shaped kwaye ilingana. Kwi data eqinileyo okanye enzima-i-tailed iimfuno zimalunga kuphela.
API — sebenzisa le calculator ukusuka kwikhowudi
Nceda le kalkulator njengendawo esemva ye-JSON ekhululekileyo - akukho qhosha lifunekayo. Thumela amaxabiso endawo engezantsi njengeparameter yombuzo okanye i-JSON. Funda i-API epheleleyo →
Incopho yesiphelo
GET https://calculator.free/api/v1/normal-distribution/curl
curl "https://calculator.free/api/v1/normal-distribution/?x=120&mean=100&sd=15"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/normal-distribution/?" + new URLSearchParams({
"x": "120",
"mean": "100",
"sd": "15"
}));
const data = await r.json();
console.log(data.results);IiNtlanganiso zeNtlanganiso yeNtlanganiso