Kalkulator distribusi normal
Tetep kateguhan probabilitas jeung probabilitas kumulatif pikeun nilai normal.
Hasilne bakal dioptimalake nalika sampeyan ngetik.
Ngenai kalkulator iki
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) is equal to the equivalent z-score. The cumulative probability P(X ≤ X ≤ x₂) is equal to the equivalent z-score. The right-tail probability P(X ≥ x) is equal to the equivalent z-score. The cumulative probability P(X ≤ x)InterWorked example: x = 100 and σ = 100. The cumulative probability P(X ≤ X ≤ x₂) is equal to the equivalent z-score. The cumulative probability P(X ≤ X ≤ x₂) is equal to the equivalent z-score. The cumulative probability P(X ≤ X) is equal to the equivalent z-score. The cumulative probability P(X ≤ X) is equal to the equivalent z-score. The cumulative probability P(X
Takon-takon kang kerep diajukake
Apa bedane antarane pdf lan cdf?
Kapadatan probabilitas (pdf) nyaéta jangkungna kurva lonceng di x; éta henteu probabilitas ku sorangan. Distribusi kumulatif (cdf) nyaéta wewengkon di handap kurva nepi ka x, anu masihan kamungkinan nilai di atanapi handapeun x.
Mengapa probabilitas nilai sing bener nol?
Pikeun distribusi terus-terusan saperti normal, titik tunggal mana wae nu bener boga probabilitas nol - ngan interval nu boga probabilitas non-nol. Éta sababna urang ngalaporkeun kadensitas di x jeung wewengkon kumulatif lain P (X = x).
Kacamatan iki duwé wewengkon 685,99 km².
Pikeun distribusi normal, kira- kira 68% tina nilai aya dina hiji standar deviasi tina rata- rata, 95% aya dina dua, sarta 99.7% aya dina tilu. Ieu cara gancang pikeun ngahukum kumaha teu biasana nilai tanpa ngahitung wewengkon anu leres.
Kepiye aku bisa nemokake probabilitas antara loro nilai?
Ngetik nilai handapeun salaku x sarta nilai luhureun salaku x₂; kalkulator bakal ngabalikeun P(x ≤ X ≤ x₂) ku cara ngirangan probabilitas kumulatif di titik handapeun ti titik luhur.
Apa bedane antara distribusi normal lan standar normal?
Standar normal nyaéta distribusi normal kalayan rata-rata 0 lan standar deviasi 1. Ngarobah nilai mana wae ka skor z-na ngagambarkeun éta kana standar normal, anu cara alat ieu ngitung probabilitas pikeun μ lan σ mana wae.
Apa dataku kudu sampurna normal?
Teu aya data anu bener-bener normal, tapi hasilna bisa dipercaya lamun datana kira-kira berbentuk lonceng jeung simetris. Pikeun data anu kuat dibédakeun atawa data anu beurat-ekor, probabilitasna ngan ukur kira-kira.
API — gunakake kalkulator iki saka kode
Ngadongékeun kalkulator ieu minangka titik akhir JSON bébas — teu peryogi kunci. Kirim nilai medan di handapeun minangka parameter pitakonan atawa JSON. Waca dokumen lengkap API →
Tampilan
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);Hasilna nyaéta perkiraan pikeun pituduh umum, henteu saran finansial, médis atanapi pajak.