Coefficient of Variation Calculator
Kuongorora kuchinja-chinja kwakaenzana sechikamu chestandard deviation kune chikonzero.
Zvinyorwa zvinogadziridzwa paunenge uchinyora.
Nezve iyi kalkulator
The coefficient of variation (CV) expresses the standard deviation as a percentage of the mean, giving a unit-free measure of relative spread. Because it is scale-independent, the CV lets you compare the variability of data sets that have very different means or units — you can put the consistency of a set of body weights next to a set of exam scores even though they share no units.
The formula is simply CV = (standard deviation ÷ mean) × 100%. This calculator uses the sample or population standard deviation you choose, divides it by the mean of the data and flags whether the relative variability is low, moderate or high (below about 15%, between 15% and 30%, or above 30% here).
Worked example: for 10, 12, 14, 16, 18 the mean is 14 and the sample standard deviation is about 3.16, so the coefficient of variation is 3.16 ÷ 14 × 100% ≈ 22.6% — moderate relative variability. The CV is widely used in finance to compare investment risk per unit of return and in the lab to judge the precision of repeated measurements.
Zvimwe zvinobvunzwa zvakanyanya
Chii chinonzi high coefficient of variation?
Hapana universal cutoff, asi CV pasi pe15% anoonekwa seyakaderera (inowirirana) variability uye pamusoro 30% relatively high. Dai kuongorora pamusoro typical mavara for your field.
Kana sei coefficient yevariation haisi yakakosha?
CV haigone kuvimbika kana chiyero chiri pedyo nezero, nekuti kuparadzana nechiyero chakati wandei kunoita kuti chiite sechichibuda, uye haina kunaka kune data ine mavara akaipa kana data risina chiyero chacho, semuenzaniso tembiricha muCelsius.
Ndiani anofanira kuisa mari yemubhadharo wemubhadharo?
Divide the standard deviation by the mean and multiply by 100 to state it as a percentage. For a mean of 14 and a standard deviation of 3.16, the CV is 3.16 ÷ 14 × 100% ≈ 22.6%.
Nei uchifanira kushandisa CV sezvaunoita nestandard deviation?
Standard deviation inobatanidzawo nezvikamu zvedata, saka haugone kuenzanisa zvakaenzana kupararira kwemitengo mumadhora nekupararira kwehurefu mucentimita. Kuparadzana nepakati kunobvisa zvikamu, zvichikubvumira kuenzanisa kuenderana kwezvinoenderana nezvikamu zvakasiyana zvedata.
Ko coefficient yevariation imwechete seyakafanana neyakaenzana standard deviation?
Yega. Relative standard deviation (RSD) ndeimwe yezita rekuti coefficient yezvikonzero zvekuchinja kwakaitwa sechikamu chemazana; zviviri zvinonzi zvinochinjana.
Ndinofanira kushandisa mufananidzo kana standard deviation yevanhu?
Usashandisa sarudzo ye sampling kana mazita ako ari muzvina zvina zvakagadzirwa kubva kune imwe nyanzvi, uye sarudzo ye population kana ari muzvina zvina zvakagadzirwa kubva kune imwe nyanzvi. Kusarudza kunochinja zvishoma standard deviation uye nekudaro CV, kunyanya kune zvidiki zvinyorwa zve data.
API — kushandisa iyi kalkulator kubva code
Nhare iyi calculator semahara JSON endpoint - hapana chikuru zvinodiwa. Kutumira nzvimbo mavara pasi separameter query kana JSON. Chii zvachose chaunoisa kunze chinoshandisa default iyo peji iri rakasviba nayo; parameter isiri yechokwadi inonzi 400, uye haisi zero. Tora yakazara API docs →
Endpoint
GET https://calculator.free/api/v1/coefficient-of-variation/curl
curl "https://calculator.free/api/v1/coefficient-of-variation/?numbers=10, 12, 14, 16, 18&type=sample"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/coefficient-of-variation/?" + new URLSearchParams({
"numbers": "10, 12, 14, 16, 18",
"type": "sample"
}));
const data = await r.json();
console.log(data.results);Zviratidzo zvemubvunzo ndezvekufungidzira kwechinangwa chekudzidzisa chete, kwete zvemari, zvehutano kana zvemari.