# Statistics online

Statistical tests, charts, probabilities and clear results. Automatically checks assumptions, interprets results and outputs graphs, histograms and other charts.
The statistics online calculators support not only the test statistic and the p-value but more results like effect size, test power, and the normality level.
If one of the validations fails, the tool recommends a solution.
What statistical test should you use? the following link will help you choose: choose a statistical test - decision questionnaire (Tutorial).

## Test statistic calculators

Find the test statistic calculator

TestAssumptionsRequired sample data
#Test nameCheckStatistic Indσσ12dμ/px̄/p̂;nS 1One Sample Z-TestMean 2One Sample T-TestMean 3Two Sample Z-TestMean 4Two Sample T-Test (Pooled variance)Mean 5Two Sample T-Test (Welch's)Mean 6Two Sample Mann-Whitney U TestRank 7Paired T-TestMean Paired
8Paired Wilcoxon Sign Rank TestRank Paired
9One Way ANOVA TestMean 10Repeated Measures ANOVA TestMean Dependent
groups
Sphericity
11Kruskal-Wallis TestMean 12Two Way ANOVA Test
Fixed model, Mixed model, Random mode, Mixed model with repeats
Mean 13One Way MANOVA Test
MeanF
14One Sample Proportion TestProportion Binomial
15Two Sample Proportion TestProportion Binomial
16Chi-Squared Test For Varianceσ 17F Test For Variancesσ 18Levene's Test For Variancesσ 19Chi-Squared Test For Goodness Of Fit
(McNemar test, Chi-squared test for association, Fisher test, Binomial test)
Fit 20Shapiro-Wilk TestFit 21Kolmogorov Smirnov TestFitD = Max1≤i≤n(Di+,Di-)
22Kaplan Meier Survival AnalysisSurvival ** - yes, - no, empty - irrelevant

## Regression calculator

#RegressionStatistic
1Simple Linear Regression 2Multiple Linear Regression 3*Bulk Linear Regression 4Binary Logistic Regressionχ2 = 2(LL1-LL0)
5Multinomial Logistic Regressionχ2 = 2(LL1-LL0)
*Bulk linear regression calculator for several dependent variables with the same predictors.

## Confidence interval, Sample size, Effect Size

#CalculatorImage
1Sample size calculators 2Test power calculators 3Effect size calculators
4Confidence intervals calculators ## Distribution calculators

#DistributionImage
1P-value 2Distributions 3Normal Distribution 4Binomial Distribution 5T Distribution (Student's) 6Chi-Squared Distribution 7F Distribution (Fisher-Snedecor) 8Poisson Distribution 9Weibull Distribution
10Exponential Distribution

#Table
1Z table
2T table

## Statistics calculators

Each statistics calculator contains step by step calculation.

#Statistic calculatorImage
1Mean Median Mode (Q1, Q3, IRQ, Range) 2Standard Deviation (Variance, Mean, SEM, MAD) 3Average (Sum, Count)
4Sample Mean (Sum, Count)
5Geometric Mean (Product, n-th root)GM
6Harmonic MeanH
7Probability (Probability formula, Dependent events, Bayes' Theorem, Independent events)P
8Combinations calculator (Combinations calculator, Permutation calculator, Repetitions)
9Correlation calculator (Pearson correlation, Spearman's rank correlation)
10Outliers (Tukey's Fences (Boxplot), Z-Score)
11Markov chain calculator (nth step probability vector, steady-state vector)
12Odds calculator (odds to probability, probability to odds)
13Betting odds calculator (fractional odds, decimal odds, American odds)
14Mean absolute deviation calculator (MAD calculator)
15Median absolute deviation calculator (MAD calculator)

## Chart makers

#ChartImage
1Histogram maker 2Box plot maker 3Bar graph maker 4Pie chart maker 5Line chart maker 6Scatter chart maker 7Area chart maker ### Goal

The goal of this website is to make statistics accessible to anyone, converting complex statistical jargon into common everyday language.
We help everybody to calculate statistics.
The calculators also provide R codes for your convenience.
We started adding a step-by-step work-through for education purposes, an easy guide on how to calculate test statistics.

### Terms

We put in a lot of effort to provide accurate results and we automatically test every new page, The older pages were tested manually, but we slowly also automate the old pages.
We usually compare the results to the R results.
The information and tools on this website are given AS IS WITHOUT ANY WARRANTY OF ANY KIND.

### Calculate statistics

The best online calculator to calculate statistics.