Ako vypočítať Normal Distribution

Čo je Normal Distribution?

The normal distribution (bell curve) is the most common probability distribution in statistics. It's defined by mean μ and standard deviation σ, describing many natural phenomena.

Vzorec

f(x) = (1 / (σ√(2π))) × e^(-(x-μ)²/(2σ²))

Sprievodca krok za krokom

1Enter mean μ, standard deviation σ, and value x
2Calculate the z-score: (x - μ) / σ
3Look up cumulative probability or use the formula

Worked Examples

Vstup

μ = 100, σ = 15, x = 115

Výsledok

z = 1, P(Z ≤ 1) ≈ 0.841

Standard normal lookup

Common Mistakes to Avoid

✕Confusing z-score with probability
✕Using population vs sample standard deviation

Ste pripravení počítať? Vyskúšajte bezplatnú kalkulačku Normal Distribution

Vyskúšajte sami →