Binomial, Poisson, Normal — sabhi distributions visually samjho!
n (trials) aur p (success probability) change karo. Har r ke liye P(X=r) bar chart mein dikhega. Mean aur variance bhi!
λ (average rate) change karo. Poisson distribution ka shape dekho — kaise yeh binomial se alag hai!
μ aur σ change karo. Shaded area = selected range ki probability. Z-score automatically dikhega!
Dekho kaise n→∞ aur p→0 (np=λ constant) hone par Binomial → Poisson ban jaata hai!