Hata Kalkülatory
Bir soragyň hasapynyň hatanyň çägini tap.
Netijeler ýazýan wagtyň täzelener.
Bu hasapçy hakda
a percentage it is z*·√(p(1 − p) / n), where p is the sample proportion, n the sample size and z* the critical value for your confidence level (1.96 for 95%). The default 50% proportion gives the most conservative (largest) margin, because the quantity p(1 − p) peaks at p = 0.5, which is why pollsters often quote it. To halve that margin you would need roughly four times the sample. To halve that margin you would need roughly four times the sample. The default 50% proportion gives the most conservative (largest) margin, because the quantity p(1 − p) peaks at p = 0.5, which is why pollsters often quote it. The margin of error is 1.96 × 0.5 × 0.5 ÷ 1000 ≈ 0.0158 ≈ 3.1 percentage points.Worked example: 1,000 respondents split 50/50 at 95% confidence. The margin of error is 1.96 × 0.5 × 0.5 ÷ 1000 ≈ 0.0158 ≈ 3.1 percentage points.Worked example: 1,000 respondents split 50/50 at 95% confidence. The margin of error is 1.96 × 0.5 × 0.5 ÷ 1000 ≈ 0.0158 ≈ 3.1 percentage points.Worked example: 1,000 respondents split 50/50 at 95% confidence. The margin of error is 1.96 × 0.5 × 0.5 ÷ 1000 ≈ 0.0158 ≈ 3.1 percentage points.Worked example: 1,000 respondents split 50/50 at 95% confidence. The margin of error is 1.96 × 0.5 × 0.5 ÷ 1000 ≈ 0.0158 ≈ 3.1 percentage points.Worked example:
Köp soralýan soraglar
Näme üçin uly bir mysal hatanyň aralygyny peselder?
Hadysy çeper köki bilen kiçeldýär, ýagny dörte bölmek n ýarym hata hadysy. Bu kiçelmek netijesi hadysy bir ýa iki göterim noktadan aşak çekmek üçin gaty uly hadysy gerekdir.
Näme üçin 50% öň bellenen proporsiýa?
P(1 − p) mukdary p = 0.5-de iň uly, şuňa görä 50/50 bölmek iň giň, iň berk hata hadysa hadysasyny döreder. Buny ulanmak hakykat hadysasynyň habar berlenden has uly däldigini kepillendirýär.
Men hatanyň aralygyny nädip hasap etmeli?
Siziň ynam derejeňiz üçin z* kritik bahasyny p(1 − p) ÷ n-niň kvadrat köki bilen çarpyň. p = 0.5, n = 1000 we 95% ynam üçin, bu 1.96 × √(0.25 ÷ 1000) ≈ 3.1 göterim nokatlary.
Hatanyň aralygy we ynam aralygy arasyndaky tapawudy näme?
Hata hadysasy yarym giňlikdir; ynanç aralygy netijeden hasyly goşmak we aýyrmak arkaly alan doly aralykdyr. 3-nokat hasyly bilen 48% netije 45% dan 51% gacha ynanç aralygy berýär.
Biziň köpçülikli bir hakykatymyz barmy?
Haýal. Birnäçe müň adamdan soňra ilat ululygy az täsir eder - wajyp zat nusga ululygy. Bu sebäpden bir milli soragy we bir şäher soragy birmeňzeş jogaplar bilen birmeňzeş ululygy paýlaşyp biler.
Güman derejesi hatanyň çäklerini nädip üýtgedýär?
Beýik bir ynam derejesi has ulu z* ulanyp, hadysany giňeldýär. 95% (z* = 1.96) dan 99% (z* = 2.576) öwürmek hadysany şol bir mysal üçin 31% öwürýär.
API — bu hasapçyny koddan ullan
Bu hasapçyny azat JSON ahtar noktasy hökmünde çagyr - açar gerek däl. Aşakdaky meýdança mykdarlaryny soragyň parametrleri ýa-da JSON hökmünde iber. Eňlisçe senedleri oka →
_Soňky
GET https://calculator.free/api/v1/margin-of-error/curl
curl "https://calculator.free/api/v1/margin-of-error/?n=1000&p=50&conf=1.96"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/margin-of-error/?" + new URLSearchParams({
"n": "1000",
"p": "50",
"conf": "1.96"
}));
const data = await r.json();
console.log(data.results);Netijeler diňe umumy ýardam üçin hasaplanypdyr, maliýe, lukmançylyk ýa-da salgyt maslahaty üçin däl.