R is open source software environment (and language) for statistical computing and graphics. Different surveys are showing R's popularity has increased substantially in recent years, especially in academic environment. Therefore, at the beginning main advantages and comparison to commercial...

The first large scale (almost 500 products, 64,300 individual price listings) empirical study of price dispersion based on the data from the Czech Republic’s e‑shops is presented in the paper. First, simple descriptive indicators like average, max, min, median and standard deviation were...