Correlation
Correlation is a statistical relationship between two or more variables. In this case, changes in one or several of these variables lead to systematic changes in another or other variables. The mathematical measure of correlation between two random variables is the correlation coefficient
Source: Order of the Ministry of Culture of Russia dated 01.09.2011 No. 906 "On Staffing Norms for Employees of State and Municipal Cultural and Recreational Institutions and Libraries" (together with "Methodological Recommendations for Applying Staffing Norms for Employees of State and Municipal Cultural and Recreational Institutions and