# Statistical test calculators

The statistical test calculators provide more than just the simple results, the calculators check the tests' assumptions, calculate test powers and interpret the results. The 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.
Choose statistical test (decision tree). What statistical test should I use? What regression type should I use?

## Test calculators

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-TestMeanPaired
8Paired Wilcoxon Sign Rank TestRankPaired
9One Way ANOVA TestMean
10Kruskal-Wallis TestMean
11Two Way ANOVA Test
Fixed model, Mixed model, Random mode, Mixed model with repeats
Mean
12One Sample Proportion TestProportionBinomial
13Two Sample Proportion TestProportionBinomial
14Chi-Squared Test For Varianceσ
15F Test For Variancesσ
16Levene's Test For Variancesσ
17Chi-Squared Test For Goodness Of Fit
(McNemar test, Chi-squared test for association, Fisher test, Binomial test)
Fit
18Shapiro-Wilk TestFit
19Kaplan Meier Survival AnalysisSurvival
** - yes, - no, empty - irrelevant

## Regression calculators

#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.

## Measurements calculators

#MeasurementImage
1Mean Median Mode (Q1, Q3, IRQ, Range)
2Standard Deviation (Variance, Mean, SEM, MAD)
3Average (Sum, Count)
5Probability (Probability formula, Dependent events, Bayes' Theorem, Independent events)P
4Combinations calculator (Combinations calculator, Permutation calculator, Repetitions)
4Correlation calculator (Pearson correlation, Spearman's rank correlation)
4Outliers (Tukey's Fences (Boxplot), Z-Score)

## Chart makers

### Goal

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

### Terms

We put in a lot of effort to provide accurate results and we automatically test every new page.
We usually compare the results to the R results.
The information and tools in this website are given AS IS WITHOUT ANY WARRANTY OF ANY KIND.