Вариант ҳисоблагич
Маълумотлар тўплами намунаси ёки аҳолининг ўзгаришини ҳисоблаш.
Натижалар ёзаётганингизда янгиланади.
Ушбу калькулятор ҳақида
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 squared deviations sum to about 118.5 and the population variance is 118.5 ÷ 6 = 19.75. Variance is the workhorse behind ANOVA, portfolio risk, quality control and many other techniques.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.Worked example: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, 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 devi
Доимий сўраладиган саволлар
Вариант стандарт қийинчиликка қандай боғлиқ?
Стандарт қийинчиликлар - бу ўзгаришнинг квадрат тагидир. Ўрнашиш квадрат бирликларда (масалан, квадрат доллар) ифодаланади, стандарт қийинчиликлар эса асл бирликларда, шунинг учун улар доим бир хил ўзгаришларни ифодалайди.
Қачон n га нисбатан n − 1 ни қўллашим керак?
Агар маълумотларингиз каттароқ аҳолини ҳисоблаш учун фойдаланилган намуна бўлса, n − 1 га бўлинг; агар маълумотларингиз сизга қизиқ бўлган бутун аҳолини ифодаласа, n га бўлинг.
Нима учун фарқ квадрат бирликларда?
Ҳар бир ўзгариш ўртачадан олдин квадратга айлантирилгани учун, натижада аввалги бирликнинг квадрати - квадрат доллар, квадрат сантиметр ва ҳоказолар акс этади. Бу ўзгаришнинг тўғри талқин қилинишини қийинлаштиради, шунинг учун унинг квадрат тарозиси, стандарт ўзгариш, унинг ёнида кўрсатилади.
Вариант манфий бўлиши мумкинми?
Йўқ. Бу квадрат рақамлар ўртачаси, шунинг учун у доимо 0 ёки мусбат бўлади. Тўғридан-тўғри 0 га тенг ўзгариш, бу гуруҳдаги барча қийматларнинг бир хиллиги дегани.
Вариант ва стандарт адаштириш ўртасидаги фарқ нима?
Улар бир хил тарқалишни, лекин турлича миқдорда тасвирлайдилар: ўзгарувчанлик ўртача квадрат ўзгарувчанлик, стандарт ўзгарувчанлик эса унинг квадрат тарозиси, аввалги бирликларда. Агар ўзгарувчанлик 25 бўлса, стандарт ўзгарувчанлик 5.
Вариант реал таҳлилда қандай қўлланилади?
Variance underlies risk in finance, signal power in engineering and the F-test in ANOVA, where the variance between groups is compared with the variance within them to decide whether group means really differ.
API — коддан бу калькуляторни ишлатиш
Бу ҳисоблагични эркин JSON охири сифатида чақиринг - қулф талаб қилинмайди. Қуйидаги майдон қийматларини савол параметрлари ёки JSON сифатида юборинг. Барча API ҳужжатларини ўқиш →
Охири
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);Натижалар фақатгина умумий йўл-йўриқ учун ҳисобланган, молиявий, тиббий ёки солиқ маслаҳати эмас.