Statistics Tools

Mean, Median, Mode Calculator

Calculate mean, median, and mode of a data set.

Standard Deviation Calculator

Calculate standard deviation and variance for any set of numbers.

Linear Regression Calculator

Calculate linear regression equation and R-squared.

Percentile Calculator

Calculate the percentile rank for any value in a dataset.

Permutations and Combinations Calculator

Calculate permutations and combinations.

Percentage Change Calculator

Calculate percentage increase or decrease between two values.

Descriptive Statistics Calculator

Calculate descriptive statistics for a dataset.

P-Value Calculator

Calculate p-value for statistical test.

Z-Score Calculator

Calculate Z-score for any value in a distribution.

Chi-Square Calculator (χ²)

Calculate chi-square value for statistical testing.

T-Test Calculator

Calculate t-value for testing difference between two means.

ANOVA Calculator - One Way

Calculate one-way ANOVA analysis of variance.

Quartile Calculator (Q1 Q2 Q3)

Calculate Q1, Q2 (median), and Q3 quartiles for a dataset.

Covariance Calculator

Calculate covariance between two variables.

Correlation Coefficient Calculator

Calculate Pearson correlation coefficient between two variables.

Confidence Interval Calculator

Calculate confidence interval for population mean.

Binomial Distribution Calculator

Calculate binomial distribution probabilities.

Sample Size Calculator

Calculate required sample size for research.

Weighted Average Calculator

Calculate weighted average of multiple values.

Normal Distribution Calculator

Calculate probabilities in normal distribution.

Median Calculator

Calculate median of a dataset.

Mode Calculator

Calculate mode of a dataset.

Probability Calculator

Calculate probability of an event.

Combination Calculator

Calculate number of combinations.

Margin of Error Calculator

Calculate margin of error for surveys.

ANOVA Calculator

Calculate one-way ANOVA.

Binomial Probability Calculator

Calculate binomial distribution probability.

Dice Probability Calculator

Calculate probability of dice outcomes.

Z-Score and Probability Calculator

Calculate z-score and probability in normal distribution.

Probability Calculator - Calculate Probability Distributions

Calculate probabilities and probability distributions online. Solve probability problems including binomial, normal, and Poisson distributions. Perfect for statistics and probability courses.

Statistics Calculator - Statistical Analysis and Calculations

Perform statistical calculations and analysis online with our free statistics calculator. Calculate mean, median, standard deviation, variance, and more. Essential for students and data analysts.

Permutation Calculator (nPr)

Calculate the number of possible permutations.

Poisson Distribution Calculator

Calculate Poisson distribution probabilities for rare events.

Range Calculator

Calculate range of a dataset.

Permutation Calculator

Calculate number of permutations.

Chi-Square Test Calculator

Calculate chi-square statistic.

Coefficient of Variation Calculator

Calculate coefficient of variation.

Chi-Square Goodness of Fit Calculator

Calculate chi-square goodness of fit.

Skewness and Kurtosis Calculator

Calculate skewness and kurtosis coefficients.

Effect Size Calculator

Calculate effect size (Cohen's d).

Moving Average Calculator

Calculate moving average of data.

Quartile Calculator

Calculate quartiles Q1, Q2, Q3.

Outlier Detection Calculator

Calculate outliers in data using IQR method.

Poisson Probability Calculator

Calculate Poisson distribution probability.

Z-Score Table Calculator

Calculate probability from Z-Score.

T-Score Calculator

Calculate T-score and critical value.

Percentile Rank Calculator

Calculate percentile rank of a value.

Bayes Theorem Calculator

Calculate conditional probability using Bayes theorem.