A method of solving the problem of studying the features of radio sources in the solar corona by cluster and factor analysis is proposed. The analysis of routine observations of average daily fluxes of radio emission in different phases of the solar cycle allowed us to detect a number of patterns in the radiation of a slowly varying component of solar radiation. The data clustering revealed the features of the studied spectra depending on the phase of the solar cycle. The use of factor analysis allowed us to find the main independent factors that determine the characteristics of radio emission at different frequencies. The research results showed that during the years of recession, minimum and rise in solar activity there are radio emission sources that are not directly related to the number of sunspots. The authors hope that their experience will be useful in the study of radiation from other sources.