װאַריאַנט־רעקאָנטראָלער

Compute the sample or population variance of a data set.

װאַריאַנט —

סטענדאַרד אָפּפֿיר —

דורכשניטלעך —

סומע פֿון קװאַראַט־װירוסן —

קלענסטער —

גרעסטע —

אָפּרוקונג —

קלײַב אַלץ אױסundo-type —

רעזולטאטן װי איר שרײַבט

Did this calculator give you the right answer?

װײַז די װײַז־פּראָגראַם

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

פֿראַגעס

װי איז די װאַריאַנט צוצוגײן צו דער סטענדאַרד־װירוס?

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.

װען װעל איך ניצן n קעגן n-1?

Divide by n − 1 when your data is a sample used to estimate a larger population; divide by n when your data represents the whole population you care about.

װאָס איז די װאַריאַנט אין קװאַרטעדיקע איינציקײטן?

Because each deviation is squared before averaging, the result carries the square of the original unit — squared dollars, squared centimetres and so on. That makes variance awkward to interpret directly, which is why its square root, the standard deviation, is reported alongside it.

קען דער װאַריאַביליטעט זײַן נעגאַטיוו?

ניטא. עס איז אַ דורכשניט פֿון קװאַרציטע נומערן, אַזוי עס איז שטענדיק נוליקע אָדער פּאָזיטיוו. אַ װאַריאַנט פֿון פּונקט נוליקע מיינט אַז יעדער באַטרעף אין דעם צעטל איז אײן

װאָס איז דער חילוק צװישן װאַריאַנט און סטענדאַרד־דיפֿליציע?

They describe the same spread but on different scales: variance is the average squared deviation, and standard deviation is its square root, back in the original units. If the variance is 25, the standard deviation is 5.

ווי איז די װאַריאַנט צונויפֿגעפֿירט אין דער אמתער אַנאַליסיס?

די װאַריאַנטן װערן אױסגעלופֿן אױף ריזיקן אין פינאַנצן, סיגנאַל־כוח אין אינזשעניריע און די F-טעסט אין ANOVA, וואו די װאַריאַנטן צװישן גרופּעס ווערן צוגעצויגן צו די װאַריאַנטן אין זיי, כדי צו באַשליסן צי די גרופּע־מײדן זענען אמת אױף אײן אײגענעם אופֿן.

API — ניצע דעם קאַלקולאַטאָר פֿון קאָד

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סוף־פּראָצעס

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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װײַז די װײַז־פּראָגראַם

פֿראַגעס

פֿאַרב:

סוף־פּראָצעס

curl

JavaScript fetch()

JavaScript `fetch()`