Margin of Error Calculator
Ita shuwa kuti iwe unoziva kuti bvunzo yako iri kuitwa sei.
Zvinyorwa zvinogadziridzwa paunenge uchinyora.
Nezve iyi kalkulator
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. The default 50% proportion gives the most conservative margin, because it
Zvimwe zvinobvunzwa zvakanyanya
Nei a zhinji sampuli kuderedza margin of error?
The margin shrinkages ne square root yemufananidzo upamhi, saka quadrupling n halfs the margin of error. This diminishing return is why very large samples are needed to push the margin below one or two percentage points.
Nei 50% iri default proportion?
Kuwanda p (1 - p) ndiyo yakakura pa p = 0.5, saka kutenda kuti 50/50 kuparadzana kunogadzira yakakura, yakanyanya kuchengetedzeka margin of error.Using it guarantees the true margin is not larger than reported.
Ndiani anofanira kuongorora kuti ndeipi mari yemubhadharo?
Kuwedzera pfungwa huru z * yenguva yako kuvimbika panzvimbo ne square root of p (1 - p) ÷ n. For p = 0.5, n = 1000 uye 95% kuvimbika, kuti ndi 1.96 × √ (0.25 ÷ 1000) ≈ 3.1 muzana zvibodzwa.
Chii chinonzi chiyero chekufungidzira? Chii chinonzi chiyero chekufungidzira? Chii chinonzi chiyero chekufungidzira?
The margin of error is the half-width; the confidence interval is the full range you get by adding and subtracting the margin from your result. A 48% result with a 3-point margin gives a confidence interval of 45% to 51%.
Iine vanhu vakawanda vanofanira kuva nechokwadi chekuti pane matambudziko akawanda?
Hapana. Pashure pezviuru zvishoma zvevanhu, huwandu hwevanhu hunokonzera kuwanda kwemari — chinhu chinokosha ndechekuti huwandu hwevanhu hwacho huri nani. Izvi ndizvo zvinoita kuti mubvunzo wemunharaunda newemuguta ugone kupihwa mari imwecheteyo nevanhu vakafanana.
Maitiro ekuti kuvimbika kwechiyero chekuzvipira kuchinja sei huwandu hwekukanganisa?
Kubva pa95% (z* = 1.96) kusvika pa99% (z* = 2.576) kunoita kuti marijitari irambe iri pa31% yemufananidzo mumwe chete, uye kusvikira pa99% (z* = 2.576) marijitari inogara iri pa31% yemufananidzo mumwe chete.
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/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);Zviratidzo zvemubvunzo ndezvekufungidzira kwechinangwa chekudzidzisa chete, kwete zvemari, zvehutano kana zvemari.