Basic statistics calculator with the following functions:
Descriptive statistics (median quartiles standard deviation variance coefficient of variation standard error)
Linear Regression (Regression coefficient regression equation)
Binomial (mathematical expectation probability distribution variance and deviation)
Poisson
Frequency distribution
T test - One Sample (H0 H1 Critical Region Calculation of the test Completion of the test p-value)
T test - Two Samples
Chi-squared test
Normal distribution

Detail of all the formulas used in the calculator

Thanks to my brothers Dhiego and Leandro for their help in design and translating