The issues of statistical analysis of various types of random processes encountered in the study of radio engineering devices, automatic control systems, biological systems, as well as acoustic phenomena are considered. The issues under consideration are divided into four groups: - general characteristics of the main types of random processes, - smoothing and centering of random processes, - issues of correlation, spectral and structural analysis of random processes, - principles for building systems for statistical analysis of random processes. The main focus is on the analysis of non-stationary random processes defined by one implementation...