#1
Coefficient of Variation Calculator
Calculate the coefficient of variation instantly. Find the mean, standard deviation, and CV percentage for your data with clear results.
#2
Critical T-Value Calculator
Calculate critical t-values by degrees of freedom, significance level, and test type. Free Student’s t-distribution calculator with steps and FAQs.
#3
critical value calculator
Critical Value Calculator finds Z, T, chi-square and F cutoffs from alpha, tail type and degrees of freedom for hypothesis tests, ANOVA and regression.
#4
Degrees of Freedom Calculator
Calculate degrees of freedom for common statistical tests with this free calculator. Get accurate results with formulas and clear explanations.
#5
Effect Size Calculator
Calculate Cohen's d effect size from two groups using their means, standard deviations, and sample sizes with accurate step-by-step results.
#6
Exponential Distribution Calculator
Use this free Exponential Distribution Calculator to calculate PDF, CDF, survival probability, mean, variance, standard deviation, median, and percentiles from a rate parameter or mean.
#7
Exponential Regression Calculator
Use this free Exponential Regression Calculator to fit an exponential model to paired X and Y data. Calculate the regression equation, coefficients a and b, R², correlation, growth or decay behavior, and predicted Y values instantly.
#8
F-Test Calculator
Calculate F-statistic, p-value, critical F-values, and degrees of freedom with this free online F-Test Calculator for comparing two sample variances.
#9
Five Number Summary Calculator
Calculate the five number summary from any data set. Find minimum, Q1, median, Q3, maximum, IQR, and range with accurate results.
#10
Frequency Distribution Calculator
Create a frequency distribution table from your data. Calculate frequencies, percentages, cumulative frequencies, range, and total observations.
#11
Hypergeometric Distribution Calculator
Calculate hypergeometric exact and cumulative probabilities, mean, variance and standard deviation for sampling without replacement.
#12
Interquartile Range Calculator
Calculate the interquartile range instantly. Find Q1, Q3, median, sorted data, and IQR with clear step-by-step statistical results.
#13
Median Calculator
Calculate the median of any set of numbers instantly. Enter your values to find the middle number with sorted data and step-by-step results.
#14
Mode Calculator
Calculate the mode of a set of numbers instantly. Find the most frequent value, including multiple modes, with clear results and explanations.
#15
Negative Binomial Calculator
Use this free Negative Binomial Calculator to calculate exact and cumulative probabilities for the number of failures before a target number of successes. It also calculates mean, variance, standard deviation, mode, and expected total trials.
#16
Outlier Calculator
Find statistical outliers in a data set using the IQR method. Calculate Q1, Q3, IQR, lower and upper fences with accurate results.
#17
P-Value Calculator
Calculate p-values from z-scores with our free P-Value Calculator. Choose one-tailed or two-tailed tests and interpret statistical significance.
#18
Pearson Correlation Calculator
Calculate Pearson correlation coefficient (r), R², t-statistic and p-value for two datasets with this free online Pearson Correlation Calculator.
#19
Percentile Calculator
Calculate any percentile from a data set instantly. Find percentile values, ranks, sorted data, and detailed statistical results easily.
#20
Probability Calculator
Probability Calculator solves single, complementary, independent, conditional and repeated events with clear results in decimals, percentages and odds.
#21
Quartile Calculator
Calculate Q1, Q2, Q3 and interquartile range from any data set. Get accurate quartiles, sorted values, and detailed results instantly.
#22
R-Squared Calculator
Calculate R², SSE, SST, SSR and regression fit from actual and predicted values with this free online R-Squared Calculator.
#23
Range Calculator
Calculate the range of a set of numbers instantly by finding the difference between the highest and lowest values in your data set.
#24
Relative Frequency Calculator
Calculate relative frequency from a data set with frequency, percentage, and cumulative frequency. Get accurate statistical results instantly.
#25
Spearman Correlation Calculator
Calculate Spearman's rank correlation (rho) from paired X and Y data. Get p-value, t-statistic, sample size, automatic tied ranks and clear interpretation.
#26
Standard Error Calculator
Calculate the standard error of the mean using standard deviation and sample size. Get accurate results with formula and step-by-step details.
#27
Statistical Power Calculator
Calculate statistical power using effect size, sample size, significance level, and test type. Get accurate power and interpretation instantly.
#28
Uniform Distribution Calculator
Use this free Uniform Distribution Calculator to calculate continuous uniform distribution probabilities, PDF, CDF, interval probability, mean, variance, and standard deviation from minimum and maximum values.
#29
Variance Calculator
Calculate population or sample variance instantly. Enter your data set to find variance, mean, squared deviations, and clear step-by-step results.
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