Statistics
Confidence interval, sample size, z-score, p-value, regression, distribution and percentile calculators with formulas.
- Bayes Theorem Calculator Chance a positive result is true 9.17% Chance a positive result is false 90.83%
- Binomial Distribution Calculator P(X = k) 0.191639 P(X ≤ k) 0.60801
- Chi-Square Test Calculator Chi-square statistic 1.3716 p-value 0.2415
- Coefficient of Variation Calculator Coefficient of variation 42.76% Mean 5
- Confidence Interval Calculator Lower bound 45.8722 Upper bound 54.1278
- Pearson Correlation Coefficient Calculator Pearson r 0.9512 r squared 0.9048
- Expected Value Calculator Expected value E[X] 13 Variance 966
- Geometric Mean Calculator Geometric mean (or average return, %) 5.421612 Arithmetic mean for comparison 7.625
- Harmonic Mean Calculator Harmonic mean 48 Arithmetic mean for comparison 50
- Linear Regression Calculator Regression equation y = 0.9048x + 1.4286 Slope (m) 0.9048
- Margin of Error Calculator Margin of error (±, points or units) 3.099 Standard error 1.5811
- Normal Distribution Calculator Result (probability or x) 0.841345 Probability as a percentage 84.1345
- Odds Ratio Calculator Odds ratio 2.25 95% CI, lower bound 0.9943
- Outlier Calculator Number of outliers 1 First quartile (Q1) 3.25
- P-Value Calculator p-value 0.049996 Verdict Significant: reject the null hypothesis (p < α)
- Percentile Calculator Value at that percentile 91 Percentile rank of your value 38.8889%
- Poisson Distribution Calculator P(X = k) 0.146525 P(X ≤ k) 0.238103
- Quartile Calculator Q1 (lower quartile) 36.25 Q2 (median) 55
- Range Calculator Range (max - min) 21 Minimum 3
- Relative Risk Calculator Relative risk 2 Risk in exposed group 20.00%
- Sample Size Calculator Required sample size 385 Before population correction 384.15
- Standard Error Calculator Standard error 2.5 Finite population correction factor 1
- T-Test Calculator t statistic 1.6667 Degrees of freedom 24
- Weighted Average Calculator Weighted average 77 Total weight 100
- Z-Score Calculator z-score 1.5 Value (x) 85