# 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 nameCheckStatisticIndσσ12dμ/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-TestMeanPaired
8Paired Wilcoxon Sign Rank TestRankPaired
9One Way ANOVA TestMean
10Repeated Measures ANOVA TestMeanDependent
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 TestProportionBinomial
15Two Sample Proportion TestProportionBinomial
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)

## Visualization

#ChartImage
1Principle component analysis
2Cluster analysis
3Histogram maker
4Box plot maker
5Bar graph maker
6Pie chart maker
7Line chart maker
8Scatter chart maker
9Area chart maker
10Venn diagram 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.