STA

TOOL FOR STATISTICS AND PROBABILITY THEORY.

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Features

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- Distribution tool

- Statistical tests

- Descriptives

Besides these areas, the application supports saving, loading, and deleting datasets where applicable.

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Distribution tool

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The distribution tool offers the following features: plot the pdf/pmf, properties (like mean value, variance, and support), cumulative probability, point mass/density, quantiles, and generating/sampling from the distribution.

Discrete probability distributions: Binomial, Hypergeometric, Negative binomial (or Pascal as it is also called), Poisson, uniform, and Zipf

Continuous probability distributions: Beta, Cauchy, Chi^2 (Chi squarred), Exponential, F (or Fisher-Snedecor as it is also called), Gamma, Normal (or Gaussian as it is also called), Student's t, uniform, and Weibull

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Statistical tests

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- One way ANOVA

- Chi^2 tests: Pearson's Chi^2 test for independence and observed vs expected counts

- Correlation tests: Pearson's correlation and Spearman's correlation

- Student's t-tests: One sample and two sample (both homoscedastic and heteroscedastic are supported)

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Descriptives

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- Plot a histogram

- Summary statistics as: number of observations, min, max, mean, standard deviation, variance, median, skewness, and kurtosis