Kalkulator Variansi
Ngitung variansi sampel utawa populasi saka hiji set data.
Hasilne bakal dioptimalake nalika sampeyan ngetik.
Ngenai kalkulator iki
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,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To find it,To
Takon-takon kang kerep diajukake
Carane varian ana hubungane karo standar deviasi?
Standar deviasi nyaéta akar kuadrat variansi. Variansi diukur dina unit kuadrat (contona, dolar kuadrat), sedengkeun standar deviasi diukur dina unit asli, janten dua-duana salawasna ngajelaskeun distribusi anu sami.
Nalika aku nggunakake n versus n − 1?
Bagikeun ku n − 1 nalika data anjeun mangrupikeun sampel anu dianggo pikeun ngitung populasi anu langkung ageung; Bagikeun ku n nalika data anjeun ngawakilan sadaya populasi anu anjeun perhatoskeun.
Mengapa varian dalam unit persegi?
Kusabab unggal deviation dikuadrasi saméméh rata-rata, hasilna ngandung kuadrat unit aslina - dollar kuadrat, sentimeter kuadrat, jsb. Anu ngajadikeun variansi teu gampang diinterpretasi langsung, sabab éta akar kuadrat, standar deviasi, dilaporkeun di samping éta.
Variansi bisa negatif?
Teu. Ieu rata-rata angka kuadrat, jadi éta salawasna nol atawa positif. Variansi anu leres-leres nol hartosna unggal nilai dina himpunan ieu identik.
Apa bedane antara varian lan standar deviasi?
Éta ngagambarkeun distribusi anu sami tapi dina skala anu béda: variansi nyaéta deviation kuadrat rata-rata, sarta standar deviasi nyaéta akar kuadratna, balik kana unit aslina. Upami variansi nyaéta 25, standar deviasi nyaéta 5.
Bagaimana varian digunakan dalam analisis nyata?
Variansi ngandung risiko dina finansial, kakuatan sinyal dina insinyur, sareng uji F dina ANOVA, dimana variansi antara kelompok dibandingkeun sareng variansi di jerona pikeun mutuskeun naha kelompok leres-leres béda.
API — gunakake kalkulator iki saka kode
Ngadongékeun kalkulator ieu minangka titik akhir JSON bébas — teu peryogi kunci. Kirim nilai medan di handapeun minangka parameter pitakonan atawa JSON. Waca dokumen lengkap API →
Tampilan
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);Hasilna nyaéta perkiraan pikeun pituduh umum, henteu saran finansial, médis atanapi pajak.