Kaitirotiro pānui
Ka tatau i te tauira, te iwi whānui rānei i te whakarerekētanga paerewa, te rerekētanga me te tauwaenga.
Ka whakahōutia ngā hua i te wā e tātuhi ana.
Mo tēnei tātaitai
standard deviation is a measure of how far a dataset is spread out around its mean: a small value means the numbers cluster tightly near the average, a large one means they are widely scattered. This calculator calculates both the sample standard deviation (dividing the sum of squared deviations by n − 1, Bessel’s correction) and the population standard deviation (dividing by n), and reports the variance, mean, range and the sum of squared deviations it used. Choose sample when your numbers are a subset drawn from a larger group, and
Ko nga pātai e pā ana
He aha te rerekētanga i waenganui i te tauira me te whakarerekētanga paerewa o te iwi whānui?
Ka wehe te tātai iwi whānui i ngā rerekētanga tapawhā tāpiri e n; ka wehe te tātai tauira e n − 1. Ko te n − 1 (whakarereketanga a Bessel) e whakamutu ana i te mea ka whakaiti te tauira i te tuaritanga pono o te iwi whānui i puta mai ai.
He aha te tapawhā o ngā whakarerekētanga?
Ka whakawātea te tapawhā i ia nekehanga tōrunga kia kore ai rātau e whakakore, ā, ka nui ake te taumaha o ngā nekehanga nui ake. Mā te tango i te pūtake tapawhā i te mutunga ka hoki te inenga ki ngā wae o te taketake o te raraunga.
He pēhea te tatau i te rerekētanga paerewa mā te ringa?
Ka kitea te tauwaenga, ka tangohia i ia uara hei whiwhi i ngā rerekētanga, te tapawhā o ia rerekētanga me te tāpiri i a rātou, kātahi ka wehea e n − 1 mō tētahi tauira, n rānei mō te iwi whānui, ā, ka tangohia te pūtake tapawhā o taua hua.
He aha te rerekētanga paerewa pai?
Kāore he uara "whakapaia" katoa - e whakawhirinaki ana ki te tauine me te horopaki o tōtou raraunga. He mea nui noa iho te rerekētanga paerewa e tata ana ki te waenganui; ko te whakawhānuitanga ōrite he iti noa iho mō ngā utu whare ka tino nui mō ngā pūkete whakamātautau. Ko te tauwhāiti o te rerekētanga e whakapuakina ana hei ōrautanga o te waenganui mō te whakataurite.
He kore te whakarerekētanga paerewa, tōraro rānei?
Ka kore pea, e puta ana anake ina ōrite ia uara, ā, kāore he horahanga i te katoa, kāore pea i te āhua tōraro, nā te mea ko te pūtake tapawhā o te tau tōpū o ngā tau tapawhā.
He aha te hiahiatia e te tātaitanga tauira kia rua ngā uara i te iti rawa?
Ka wehea te tātai tauira e n − 1, kia taea ai e tētahi uara kotahi te wehe i te kore, ā, ka waiho i te kore tautuhi. He tikanga anake te whakarerekētanga paerewa tauira ina rua, neke atu rānei o ngā kitenga kia whakatauritetia.
API — whakamahi tēnei tātaitai mai i te waehere
E kī ana tēnei tātaitai hei wāhi mutunga kore JSON - kāore he kī e hiahiatia ana. Ka tukuna ngā uara āpure i raro nei hei tohutoro pātai, JSON rānei. Ka pānui te papatono API katoa →
Whakamutunga
GET https://calculator.free/api/v1/standard-deviation/curl
curl "https://calculator.free/api/v1/standard-deviation/?numbers=9, 2, 5, 4, 12, 7, 8, 11, 9, 3, 7, 4, 12, 5, 4, 10, 9, 6, 9, 4&type=sample"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/standard-deviation/?" + new URLSearchParams({
"numbers": "9, 2, 5, 4, 12, 7, 8, 11, 9, 3, 7, 4, 12, 5, 4, 10, 9, 6, 9, 4",
"type": "sample"
}));
const data = await r.json();
console.log(data.results);Ko ngā hua he whakataunga mō te tohutohu ahuwhānui anake, ehara i te tohutohu moni, rongoā, tāke rānei.