Variance Calculator

Calculate the sample or population variance of a data set.

Variance —

Standard deviation —

Mean —

Sum of squared deviations —

Chimwe chinhu —

_Kukurumidza —

_Kusiyana —

Kuverenga —

Zvinyorwa zvinogadziridzwa paunenge uchinyora.

Nezve iyi kalkulator

standard deviation is the average of the squared deviations from the mean and is the square of the standard deviation. This calculator gives the sample variance (sum of squared deviations divided by n − 1) or the population variance (divided by n), along with the standard deviation, mean, range and sum of squared deviations. Variance is expressed in squared units, which is why it is usually easier to interpret. Variance is always non-negative and gives extra weight to values that lie far from the mean. The standard deviation is the average of the squared deviations from the mean and is the square of the standard deviation. This calculator gives the sample variance (sum of squared deviations divided by n − 1) or the population variance (divided by n), along with the standard deviation, mean, range and sum of squared deviations. This calculator gives the average of the squared deviations from the mean and is the square of the standard deviation.To find it, take the mean, subtract it from every value, square each of those deviations, add them together and divide by n − 1 for a sample or by n for a whole population.To find it, take the mean, subtract it from every value, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations, square each of those deviations

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Maitiro variance anobatana sei ne standard deviation?

The standard deviation is the square root of the variance. Variance is in squared units (for example, squared dollars), while the standard deviation is back in the original units, so the two always describe the same spread.

Kana ndichishandisa n versus n - 1?

Dziva ne n - 1 kana data rako richishandiswa semuenzaniso wekuti uwane huwandu hwakawanda hwevanhu; sarudza n kana data rako richiratidza huwandu hwevanhu vako vese.

Nei variance iri muzvikwata zve square?

Nekudaro, sezvo chero deviation inonzi squared (inoenzaniswa nekwakaenzaniswa) pakutanga kweaverage, iyo result inotakura square yeiyo yazvino unit—squared dollars, squared centimeters, etc. That makes variance awkward to interpret directly, which is why its square root, the standard deviation, is reported alongside it.

Variance inogona kunge iri yakaipa?

Hapana. Iyi ndiyo nhamba yepakati yezvikwereti, saka inoramba iri zera kana yakanaka. Variance yezero yakafanana nezero zvinoreva kuti chero hunhu muzvinyorwa zvinofanana.

Chii chinonzi chiyero pakati pevariance nestandard deviation?

Vanoratidza kupararira kwechiratidzo chimwe chete asi pazviyero zvakasiyana: variance ndiyo yakazara squared deviation, uye standard deviation ndiyo yakazara square root, muzvikamu zvakabva pakutanga. Kana variance iri 25, standard deviation iri 5.

Sei variance inoshandiswa muchokwadi analysis?

Variance inoreva kuti kune mukana wekuti zvinhu zvichaitika mumari, simba rechiratidzo musainzi uye F-test muANOVA, uko kuchinja pakati pezvikwata kunoenzaniswa nekuchinja pakati pavo kuti vaone kana zvikwata zviri kuita zvinhu zvakasiyana.

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/variance/

curl

curl "https://calculator.free/api/v1/variance/?numbers=12, 15, 17, 20, 22, 25&type=sample"

JavaScript `fetch()`

const r = await fetch(
  "https://calculator.free/api/v1/variance/?" + new URLSearchParams({
    "numbers": "12, 15, 17, 20, 22, 25",
    "type": "sample"
  }));
const data = await r.json();
console.log(data.results);

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Endpoint

curl

JavaScript fetch()

JavaScript `fetch()`