From variance to the method of least squares
The mean is one of the most popular and widely used statistical measures. However, by itself, it is not an exhaustive indicator and only allows us to determine the central...
Natalia Golonka - articles
Factor analysis
The aim of factor analysis is to explain as much of the variation as possible with as few variables as possible.
Customer Satisfaction Index (CSI)
The Customer Satisfaction Index (CSI) is a method used in marketing to evaluate client satisfaction derived from products or services being provided by a company or organisation.