I-Calculator ye-Percentile
Find the value at any percentile and the quartiles of a data set.
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Malunga nale Calculator
A percentile is the value below which a given percentage of the data falls — the 90th percentile is the point beneath which 90% of the values lie. Percentiles turn a raw number into a rank you can interpret: a test score at the 90th percentile beat 90% of the other scores.
This calculator uses the linear-interpolation method, the same as the spreadsheet PERCENTILE.INC function. It sorts the data, computes a rank of (p ÷ 100) × (n − 1), and if that rank falls between two positions it interpolates linearly between the neighbouring values. It also returns the full five-number summary (minimum, first quartile, median, third quartile and maximum) and the interquartile range.
Worked example: for 5, 7, 8, 12, 14, 18, 21, 25, 30, 35 (ten values) the 90th percentile has rank 0.90 × 9 = 8.1, which lies between the values at positions 8 and 9 (30 and 35); interpolating 0.1 of the way gives 30 + 0.1 × 5 = 30.5. A table below gives the percentile rank of every value, which is handy for growth charts, exam scoring and benchmarking.
Imibuzo ebuza rhoqo
I-percentile ibalolwa njani?
I-data ihlukaniswe kwaye isikhundla se (p/ 100) · (n − 1) sibalolwe. Ukuba esisikhundla sinani elipheleleyo ixabiso kulo msebenzi libuyiselwa; kungenjalo i-calculator idibanisa ngokuthe ngqo phakathi kweexabiso ezimbini ezijongeneyo. Le yinkqubo equkayo (PERCENTILE. INC).
Yintoni utshintsho phakathi kwepesentiyeli kunye nequartile?
IiQuartiles ziipersentile ezikhethekileyo kuphela ezihlula i-data zibe ziinxalenye ezine ezilinganayo: i-quartile yokuqala yi-percentile ye-25, yesibini yi-50 (i-median) kwaye yesibini yi-percentile ye-75.
Yintoni umda phakathi kweekota?
Uluhlu lwee-interquartile (IQR) luyi-quartile yesithathu engaphantsi kwe-1 — uluhlu lwe-50% yedatha esembindini. Kuba aluhoyi i-quartile ephezulu nesezantsi, luyi-metric enamandla yosasazo kwaye lusetyenziswa rhoqo ukuphawula iziqwengana ezingaphandle kwe-outliers.
Yintoni ethetha ukuba i-90 percentile?
Ixabiso elingaphantsi kwelo 90% yedatha ihlala phantsi, ngoko ke kuphela i-10% yokubona iphezulu. Ukuphumelela kwi-90th percentile kuvavanyo kuthetha ukuba wenze ngcono kune-90% yabanye abathathayo uvavanyo.
Ingaba i-50 percentile ifana ne-median?
Ewe. I-50th percentile ihlula i-data ukuze i-half yexabiso lifike ngaphantsi kwayo, eyiyo ngokuchanekileyo intsingiselo ye-median.
Kutheni isixhobo esihlukileyo singanika i-percentile encinci ehlukileyo?
There are several accepted percentile definitions. This calculator uses inclusive linear interpolation (PERCENTILE.INC); the exclusive method (PERCENTILE.EXC) and the nearest-rank method place the percentile slightly differently, so results can vary a little between tools, especially on small data sets.
API — sebenzisa le calculator ukusuka kwikhowudi
Nceda le khadi lemali njengendawo esemva ye-JSON ekhululekileyo - akukho qhosha lifunekayo. Thumela amaxabiso endawo ezantsi njengeparameter yombuzo okanye i-JSON. Nantoni na oyenzayo isebenzisa okungagqibekanga okufanayo eli phepha ligqityiwe ngaphambili; iparameter engaziwayo yi 400, ayikho i zero ekhululekileyo. Funda i-API epheleleyo →
Incopho yesiphelo
GET https://calculator.free/api/v1/percentile/curl
curl "https://calculator.free/api/v1/percentile/?numbers=5, 7, 8, 12, 14, 18, 21, 25, 30, 35&p=90"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/percentile/?" + new URLSearchParams({
"numbers": "5, 7, 8, 12, 14, 18, 21, 25, 30, 35",
"p": "90"
}));
const data = await r.json();
console.log(data.results);Results are estimates for general guidance only, not financial, medical or tax advice.