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= z²·p(1 − p) / e², where z is the critical value for the confidence level, p the expected proportion and e the target margin of error as a decimal. This sample size calculator finds how many people you need to survey for a chosen margin of error and confidence level — the planning step before you run a poll or study. It uses the standard formula n = z²·p(1 − p) / e², where z is the critical value for the confidence level, p the expected proportion and e the target margin of error as a decimal. This sample size calculator finds how many people you need to survey for a chosen margin of error and confidence level — the planning step before you run a poll or study.Worked example:Worked example:Work
Tambayoyi da ake yi da yawa
Ta yaya ake kimanta girman misali?
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QDialogButtonBox
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Da yawa mutane ne nake buƙata don 95% na matsakaicin darajar aminci?
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Me ya sa aka kwatanta girman misalin zuwa sama?
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QDialogButtonBox
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[Translation temporarily unavailable. Please try again.] [Translation temporarily unavailable. Please try again.] →
QDialogButtonBox
GET https://calculator.free/api/v1/sample-size/curl
curl "https://calculator.free/api/v1/sample-size/?conf=1.96&e=5"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/sample-size/?" + new URLSearchParams({
"conf": "1.96",
"e": "5"
}));
const data = await r.json();
console.log(data.results);@ action: inmenu