Hesabu ya Mkadiriaji

Toa mfano au idadi ya watu inayotofautiana na habari fulani iliyowekwa.

Kanuni zilizotengwa zenye vituo au nafasi mbalimbali.
Zoea —
Kukengeuka —
Neno Maana —
Mapito ya mraba —
Minimu —
Maximum —
Eneo —
Hesabu —

Matokeo yanakuwa bora zaidi unapochapa.

Je, hesabu hiyo ilikupa jibu linalofaa?

Kuhusu kifaa hiki cha kupigia hesabu

Variance 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 the standard deviation — its square root — is usually easier to interpret.

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. Squaring is what makes variance always non-negative and gives extra weight to values that lie far from the mean.

Worked example: for 12, 15, 17, 20, 22, 25 the mean is 18.5. The squared deviations sum to about 118.5, so the sample variance is 118.5 ÷ 5 = 23.7 and the population variance is 118.5 ÷ 6 = 19.75. Variance is the workhorse behind ANOVA, portfolio risk, quality control and many other techniques; the deviation table below lists each value’s distance from the mean and its square.

Maswali yaliyoulizwa mara nyingi

Tofauti ya viwango vya maadili ni tofauti jinsi gani?

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.

Ninatumia n na n n.B. 1 wakati gani?

& _ 1 wakati data yako inapotumika kukadiria idadi kubwa zaidi ya watu; gawane na n n takwimu zako ziwakilishapo idadi yote ya watu unayojali.

Kwa nini kuna tofauti katika sehemu za mraba?

Kwa sababu kila kosa hufanyika kabla ya wastani wa wastani, matokeo huwa na uwanja wa kizio cha awali cha dola za mraba, tandtilits na kadhalika.

Je, kuna tofauti yoyote kati ya mambo hayo mawili?

La. ni wastani wa nambari zenye umbo la mraba, kwa hiyo sikuzote ni sufuri au chanya. Tofauti ya sufuri barabara humaanisha kila thamani katika seti ni sawa.

Kuna tofauti gani kati ya kutofautiana na kuacha kanuni za kawaida?

Wanasema kwamba kuenea kwa mizani tofauti - tofauti ni kupotoa mambo kwa wastani, na kasoro ya kawaida ni mzizi wake wa mraba, ikiwa tofauti ni 25, badiliko la kawaida ni 5.

Tofauti hutumiwaje katika mchanganuo halisi?

Variasi ndiyo sababu ya hatari ya kifedha, uwezo wa kutoa ishara katika uhandisi na jost katika ABCOVA, ambapo tofauti kati ya vikundi zinalinganishwa na tofauti zilizo ndani yao kuamua kama kikundi cha watu kinamaanisha tofauti.

Vifaa vya Kupima Gharama

Hesabu ya Mzoga Loo, Median, Modesta Kifaa cha Kuhesabu Watu

❤️ Upendo Calculator.Free? Ishiriki

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API bustanini hutumia kifaa hiki cha hesabu kutoka kwenye mfumo wa sheria

Ipigie simu kifaa hiki cha kupigia hesabu kama Junse É not doot toder. Chochote unachoacha kinatumia kiwango kilekile cha mwisho ambacho ukurasa huu haujakamilika; parameta isiyojulikana ni 400, si sufuri kimya kamwe. Soma habari kamili za API docs →

keyboard label

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);

Matokeo ni makadirio ya mwongozo wa ujumla, si wa kifedha, wa kitiba au wa kodi tu.