The app is designed to store (edited, deleted, renamed) samples of random variables, to calculate their basic statistical characteristics as the: -average value; - standard deviation; - skewness and kurtosis; - to calculate confidence intervals of the average value; - variance and standard deviation; - check whether the sample is from normal or uniformly distributed random variable using criterion of Pearson; - check whether the sample is from normal, uniformly and exponentially distributed random variable using criterion of Kolmogorov-Smirnov; - and zero skewness and kurtosis; - determined histogram of sample and smoothed histograms.
Samples, results of processing and histogram can be saved in database (Sqlit). Tables with these data can be exported for printing for example, by means of Sqlit browser. Perform the function "Init DB"( initiate DB) from the menu of boot activity, when booting the application for first time With the implementation of this function is loaded and a list of some samples.