P-Value Calculator (kubva Z)

Q: P < 0.05 inoreva here kuti mhedzisiro yacho inokosha?

0.05 ichokwadi chete, kwete pamutemo.Inoreva kuti 5% yechokwadi inogona kuitika. Zvinoenderana nenyaya yauri kuongorora uye nemari yaunenge uchida kubhadharisa kuti uone kuti uri kuda kuongororwa, zvinokurudzirwa kuti uise 0.01 senzira yekuongorora.

Q: Ndinogona sei kushandura z-score kuita p-value?

Look up the tail area of the standard-normal distribution beyond your z-score. This tool does it for you: the left tail is P(Z ≤ z), the right tail is 1 − P(Z ≤ z), and the two-tailed p-value doubles the smaller of the two.

Q: Chii chinoita kuti fungidziro yekuti pane chokwadi chakanaka chiwedzere kunyatsoshanda?

Hapana. A zhinji p-mutengo zvinoreva chete data rako rinoenderana ne null hypothesis, kwete kuti null inoratidza. Kushaya chokwadi pamusoro yake hachisi chokwadi kwairi; unogona chete kushaya sample size kuongorora mhedzisiro.

Q: Ndiani anofanira kushandisa z-based p-value sezvaanofanira kushandisa t-based p-value?

Use the z-based value when the population standard deviation is known or the sample is large (roughly n ≥ 30). For small samples with an estimated standard deviation, a t-distribution gives a more accurate p-value.

Q: Chii chinonzi chiyero chekuenzanisa pakati pep-value nechiyero chekuenzanisa?

The significance level α is a threshold you set in advance, such as 0.05. The p-value is computed from your data. You reject the null hypothesis when the p-value falls below α.

Kushandura z- score kune imwe- kana maviri- mativi p- kunaka.

P-value —

Ku α = 0.05 —

P (Z ≤ z) —

Right-tailed P(Z ≥ z) —

Two-tailed —

Zvinyorwa zvinogadziridzwa paunenge uchinyora.

Did this calculator give you the right answer?

Nezve iyi kalkulator

This p-value calculator converts a z-score (the standard-normal test statistic) into a p-value — the probability of observing a result at least as extreme as yours if the null hypothesis is true. A small p-value means your data would be surprising under the null hypothesis, which counts as evidence against it.

Choose a left-tailed, right-tailed or two-tailed test; all three p-values are shown so you can compare. The left-tailed value is P(Z ≤ z), the right-tailed value is P(Z ≥ z), and the two-tailed value is 2 × P(Z ≥ |z|) — double the smaller tail. All come from the standard-normal cumulative distribution, so this tool applies to z-tests and large-sample approximations, and the result is flagged against the conventional α = 0.05 threshold.

Worked example: a z-score of 1.96 gives a right-tailed p-value of about 0.025 and a two-tailed p-value of about 0.050 — exactly the classic 5% cutoff, which is why 1.96 is the critical value for a 95% two-sided test. Since 0.05 is not below 0.05, that result sits right on the border of significance.

Zvimwe zvinobvunzwa zvakanyanya

Chii chinonzi p-value?

P-value inoratidza kuti, kana null hypothesis ichiratidza kuti yakakodzera, bvunzo yestatisitikisi ichaita sei. P-value yakati, kana null hypothesis ichiratidza kuti yakakodzera, bvunzo yestatisitikisi ichaita sei. P-value inoratidza kuti, kana null hypothesis ichiratidza kuti yakakodzera, bvunzo yestatisitikisi ichaita sei.

Maitiro ekuita kuti p-value ine mativi maviri isiyana sei neimwe chete?

A two-tailed bvunzo inofungidzira zvakaoma zviito munzira mbiri, saka yake p-mutengo ndiwe double the one-tailed mitengo yeimwe yeimwe |z|. Usati two-tailed paunenge chete kugara kuti pane kusiyana, uye one-tailed paunenge wakafungidzira nzira pamberi.

P < 0.05 inoreva here kuti mhedzisiro yacho inokosha?

0.05 ichokwadi chete, kwete pamutemo.Inoreva kuti 5% yechokwadi inogona kuitika. Zvinoenderana nenyaya yauri kuongorora uye nemari yaunenge uchida kubhadharisa kuti uone kuti uri kuda kuongororwa, zvinokurudzirwa kuti uise 0.01 senzira yekuongorora.

Ndinogona sei kushandura z-score kuita p-value?

Look up the tail area of the standard-normal distribution beyond your z-score. This tool does it for you: the left tail is P(Z ≤ z), the right tail is 1 − P(Z ≤ z), and the two-tailed p-value doubles the smaller of the two.

Chii chinoita kuti fungidziro yekuti pane chokwadi chakanaka chiwedzere kunyatsoshanda?

Hapana. A zhinji p-mutengo zvinoreva chete data rako rinoenderana ne null hypothesis, kwete kuti null inoratidza. Kushaya chokwadi pamusoro yake hachisi chokwadi kwairi; unogona chete kushaya sample size kuongorora mhedzisiro.

Ndiani anofanira kushandisa z-based p-value sezvaanofanira kushandisa t-based p-value?

Use the z-based value when the population standard deviation is known or the sample is large (roughly n ≥ 30). For small samples with an estimated standard deviation, a t-distribution gives a more accurate p-value.

Chii chinonzi chiyero chekuenzanisa pakati pep-value nechiyero chekuenzanisa?

The significance level α is a threshold you set in advance, such as 0.05. The p-value is computed from your data. You reject the null hypothesis when the p-value falls below α.

API — kushandisa iyi kalkulator kubva code

Nhare iyi calculator semahara JSON endpoint - hapana chikuru zvinodiwa. Kutumira nzvimbo mavara pasi separameter query kana JSON. Chii zvachose chaunoisa kunze chinoshandisa default iyo peji iri rakasviba nayo; parameter isiri yechokwadi inonzi 400, uye haisi zero. Tora yakazara API docs →

Endpoint

GET https://calculator.free/api/v1/p-value/

curl

curl "https://calculator.free/api/v1/p-value/?z=1.96&tail=two"

JavaScript `fetch()`

const r = await fetch(
  "https://calculator.free/api/v1/p-value/?" + new URLSearchParams({
    "z": "1.96",
    "tail": "two"
  }));
const data = await r.json();
console.log(data.results);

Zviratidzo zvemubvunzo ndezvekufungidzira kwechinangwa chekudzidzisa chete, kwete zvemari, zvehutano kana zvemari.

Nezve iyi kalkulator

Zvimwe zvinobvunzwa zvakanyanya

Maitiro ekuita Calculators

Endpoint

curl

JavaScript fetch()

JavaScript `fetch()`