📊 Statistics Calculator

Comprehensive statistical analysis tool with descriptive statistics, probability distributions, hypothesis testing, and data visualization. This tool is supported by user contributions .

📥 Data Input

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Enter data above to see descriptive statistics
📚 Statistical Methods & Formulas ▼

Descriptive Statistics

  • Mean: Σx / n
  • Variance: Σ(x - μ)² / (n-1)
  • Skewness: (n/((n-1)(n-2))) Σ((x-μ)/σ)³
  • Kurtosis: (n(n+1)/((n-1)(n-2)(n-3))) Σ((x-μ)/σ)⁴ - (3(n-1)²/((n-2)(n-3)))

Distributions

  • Normal: (1/σ√(2π)) e^(-(x-μ)²/(2σ²))
  • Binomial: C(n,k) p^k (1-p)^(n-k)
  • Poisson: (λ^k e^-λ) / k!
  • Exponential: λ e^(-λx)