Sample Size Calculator kya hai?

Ye ek tool hai jo Cochran ke formula, n = z² · p(1 − p) / e², ko apply karke ek chuni gayi confidence level aur margin of error ke liye minimum survey responses calculate karta hai, aur optionally finite population ke liye correct karta hai.

Sample Size Calculator known population ko kaise handle karta hai?

Jab aap 'Limit to a known population size' on karke total daalte hain, to calculator finite population correction apply karta hai, jo chhote ya limited groups — jaise ek hi company ke staff — ke liye zaroori sample size kam kar deta hai.

Agar mujhe proportion pata nahi to Sample Size Calculator mein kaunsa proportion use karun?

Expected proportion field ko off hi rehne dijiye. Calculator tab 50% assume karega, jo sabse conservative choice hai aur sabse bada — isliye sabse safe — sample size deta hai.

Kya Sample Size Calculator mere survey numbers upload karta hai?

Nahi. Confidence level, margin of error, population size aur har result aapke browser mein hi locally calculate hota hai aur kabhi bhi ArrayKit ya kahin aur upload nahi hota.

Is calculator mein 99% confidence level ke liye 95% se bada sample kyun chahiye?

Zyada confidence level ek bada z-score use karta hai, jisse formula ka numerator bada ho jaata hai, isliye Sample Size Calculator ek bada sample size deta hai taaki true value margin of error ke andar hone ki zyada certainty ho.

Kya main Sample Size Calculator ko 10,000 logon wale customer survey ke liye use kar sakta hoon?

Haan. Apni confidence level aur margin of error daaliye, phir population size option on karke 10,000 daaliye taaki result par finite population correction apply ho jaaye.

Sample Size Calculator Online

Apne survey ke liye chuni gayi confidence level aur margin of error ke hisaab se zaroori sample size nikaalein. Aapke numbers aapke device par hi rehte hain.

Sample Size Calculator poori tarah aapke browser mein chalta hai. Confidence level, margin of error, population size aur har calculated result aapke device par hi rehta hai aur kabhi ArrayKit par upload nahi hota.

Confidence Interval Calculator kholiye

Sample Size Calculator ke baare mein

Sample Size Calculator batata hai ki ek survey ko chuni gayi confidence level aur margin of error tak pahunchne ke liye kitne respondents chahiye, iske liye ye Cochran ke formula ka use karta hai jo population proportion estimate karta hai. Confidence level daaliye (ya 90/95/99% preset chuniye), margin of error daaliye, aur ye minimum sample size, uske peeche ka z-score aur assume kiya gaya proportion de dega. Jab total audience pata ho aur limited ho — jaise kisi company ke 4,000 employees — to finite population correction on karke requirement aur kam kar sakte hain, ya agar koi previous study se rough split pata hai to expected proportion set kar sakte hain. Ye researchers, product aur UX teams, aur students ke liye bana hai jo survey, poll ya A/B test plan kar rahe hain aur data collect karne se pehle ek justify-able sample size chahte hain. Har calculation aapke browser mein hi hota hai — koi bhi survey parameter upload nahi hota.

Features

Confidence level aur margin of error se Cochran ke formula ke through zaroori sample size calculate karta hai
Common 90%, 95%, aur 99% confidence levels ke liye ek-click presets, ya koi bhi custom value
Jab total population size pata ho aur limited ho to optional finite population correction
Optional expected proportion input, jab pata na ho to default conservative 50/50 split use hota hai
Result ke peeche ka exact z-score, corrected sample size aur use kiya gaya proportion dikhata hai
Confidence level, margin of error aur zaroori sample size ka plain-text summary copy karta hai
Bahut chhote pilot studies aur bahut badi population sizes dono ko bina precision khoye handle karta hai
Poori tarah aapke browser mein chalta hai — survey parameters kabhi upload nahi hote

Sample Size Calculator kaise use karein

Apni desired confidence level daaliye, ya 90/95/99% preset chuniye
Acceptable margin of error percentage mein daaliye
Optionally koi known population size ya expected proportion on kariye
Zaroori sample size dekhiye aur summary copy kariye

Example

Input

95%, ±5%

Output

Sample size: 385

95% confidence aur ±5% margin of error par, unknown 50/50 proportion ke saath, Cochran ke formula ko 385 respondents chahiye.

Common errors aur troubleshooting

Margin of error 5 ki jagah 0.05 type kar diya, jisse sample size bahut zyada bad jaata hai. — Percentage form daaliye, jaise ±5% margin ke liye 5 — Sample Size Calculator ise khud internally convert kar deta hai.
Confidence level 95 ki jagah 0.95 type kar diya. — Percentage (95) daaliye, decimal probability nahi; field 0–100 ke beech ki value expect karta hai.
Zaroori sample size survey ki total population se bhi bada lag raha hai. — 'Limit to a known population size' on kariye aur total population daaliye — finite population correction chhote, limited groups ke liye requirement kam kar deta hai.
Expected proportion badalne par result kaafi change ho jaata hai. — 50% sabse conservative choice hai (sabse bada sample size); alag proportion tabhi daaliye jab koi pehle ka ya pilot study usko support kare.

Aksar pooche jaane wale sawaal

Sample Size Calculator kya hai?: Ye ek tool hai jo Cochran ke formula, n = z² · p(1 − p) / e², ko apply karke ek chuni gayi confidence level aur margin of error ke liye minimum survey responses calculate karta hai, aur optionally finite population ke liye correct karta hai.
Sample Size Calculator known population ko kaise handle karta hai?: Jab aap 'Limit to a known population size' on karke total daalte hain, to calculator finite population correction apply karta hai, jo chhote ya limited groups — jaise ek hi company ke staff — ke liye zaroori sample size kam kar deta hai.
Agar mujhe proportion pata nahi to Sample Size Calculator mein kaunsa proportion use karun?: Expected proportion field ko off hi rehne dijiye. Calculator tab 50% assume karega, jo sabse conservative choice hai aur sabse bada — isliye sabse safe — sample size deta hai.
Kya Sample Size Calculator mere survey numbers upload karta hai?: Nahi. Confidence level, margin of error, population size aur har result aapke browser mein hi locally calculate hota hai aur kabhi bhi ArrayKit ya kahin aur upload nahi hota.
Is calculator mein 99% confidence level ke liye 95% se bada sample kyun chahiye?: Zyada confidence level ek bada z-score use karta hai, jisse formula ka numerator bada ho jaata hai, isliye Sample Size Calculator ek bada sample size deta hai taaki true value margin of error ke andar hone ki zyada certainty ho.
Kya main Sample Size Calculator ko 10,000 logon wale customer survey ke liye use kar sakta hoon?: Haan. Apni confidence level aur margin of error daaliye, phir population size option on karke 10,000 daaliye taaki result par finite population correction apply ho jaaye.

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