Kalkulator Z-score

Pretvori sirovinu u z-rezultat i pronađi njen percentil.

Z-rezultat —
Percentile P(X ≤ x) —
P(X ≥ x) —
Pozicija —

Rezultati se ažuriraju dok tipkate.

Je li ti kalkulator dao ispravan odgovor?

O ovom kalkulatoru

standard score is the average of the standard deviations of the test. The standard score is the average of the standard deviations of the test. The standard score is the average of the standard deviations of the test. The standard score is the average of the standard deviations of the test. The standard score is the average of the standard deviations of the test. The standard score is the average of the standard deviations of the test. The standard score is the average of the standard deviations of the test. The standard score is the average of the standard deviations of the test. The standard score is the average of the standard deviations of the test.Worked example: The standard score is the average of the standard deviations of the test. The standard score is the average of the standard deviations of the test.Worked example: The standard score is the average of the standard deviations of the test.Worked example: The standard score is the average of the standard deviations of the test.Worked example: The standard score is the average of the standard deviations of the test.Worked example: The standard score is the average of the standard deviations of the test.Worked example: The standard score is the average of the standard deviations of the test.Worked example: The standard score is the average of the standard deviations of the test.Worked example: The standard score is the average of the standard deviations of the test.Worked example: The standard score is the average of the standard deviations of the test.Worked example: The standard score is the average of the standard deviations of the test.Worked example: The standard score is the average of the standard deviations of the test.Worked example: The standard score is the average of the standard deviations of the test.Worked example: The standard score is the average of the standard deviations of the test.Worked example: The standard score is the average of the standard deviations of the test.Worked example: The standard score is the average of the standard deviations of the test.Worked example: The standard score is the average of the standard deviations of the test.Worked example: The standard score is the average of the standard deviations of the test.Worked example: The standard score is the average of the standard deviations of the test.Worked example: The standard score is the average of the standard deviations of the test.Worked

Često postavljana pitanja

Šta znači z-rezultat od 2?

Z-rezultat od 2 znači da je vrijednost dvije standardne devijacije iznad prosjeka. Pod normalnom distribucijom oko 97,7% vrijednosti pada ispod njega, tako da je prilično ekstremna, visoka vrijednost.

Može li z-rezultat biti negativan?

Negativni z-rezultat jednostavno znači da je vrijednost ispod prosjeka. Z-rezultat od −1,5, na primjer, je jedna i po standardna devijacija ispod prosjeka.

Kako izračunati z-rezultat?

Oduzeti srednju vrijednost od vrijednosti i podijeliti sa standardnom devijacijom: z = (x − μ) / σ. Za x = 85, μ = 70 i σ = 10 z-rezultat je (85 − 70) ÷ 10 = 1.5.

Kako se z-rezultat odnosi na percentil?

Z-rezultat se pretvara u percentil putem standardno-normalne kumulativne distribucije, koja daje udio vrijednosti ispod njega. z-rezultat od 0 je 50. percentil, +1 je oko 84. i −1 oko 16.

Šta se smatra visokim ili neuobičajenim z-score?

Po pravilu, z-score iznad ±2 je neuobičajen, a iznad ±3 je rijedak, jer oko 95% normalne distribucije leži unutar dvije standardne devijacije od srednje vrijednosti, a 99,7% unutar tri.

Da li mi treba normalna distribucija da koristim z-rezultat?

Možete standardizirati bilo koju vrijednost sa z formulom bez obzira na oblik, ali percentil i rep vjerovatnoće ovaj alat izvještava pretpostavlja da podaci slijede normalnu distribuciju. Za jako nenormalne podatke te vjerovatnoće su samo približne.

Kalkulator

Standardna devijacija Kalkulator P-vrijednosti (od Z) Normalna distribucija

❤️ Ljubav Calculator.Free? Podijelite ga.

𝕏  X Facebook Reddit
API — koristite ovaj kalkulator iz koda

Pozovi ovaj kalkulator kao slobodnu JSON krajnju tačku - nije potreban ključ. Pošalji vrijednosti polja ispod kao parametre upita ili JSON. Sve što izostavite koristi istu zadanu vrijednost kojom je ova stranica unaprijed popunjena; nepoznat parametar je 400, nikad tiha nula. Pročitajte cijelu API dokumentaciju →

Krajnja tačka

GET https://calculator.free/api/v1/z-score/

curl

curl "https://calculator.free/api/v1/z-score/?x=85&mean=70&sd=10"

JavaScript fetch()

const r = await fetch(
  "https://calculator.free/api/v1/z-score/?" + new URLSearchParams({
    "x": "85",
    "mean": "70",
    "sd": "10"
  }));
const data = await r.json();
console.log(data.results);

Rezultati su procjene samo za opće smjernice, a ne financijski, medicinski ili porezni savjeti.