Przygotowanie danych
Articles
How to prepare for reliability analysis?
The area of reliability analysis is of interest first of all to those who plan to use scales and in…
Deciding to remove an item from the scale
Sometimes instead of asking a single question in a survey, we ask a whole set of questions, which a…
Car value: variable selection for linear modelling
The Automatic linear modeling procedure is intended to streamline the work of analysts who use regr…
Levels of measurement
The level of measurement is one of the most important properties of variables. It determines which …
Outlier cases. Identification and significance in data analysis
In data analysis, it is important to identify unusual observations that are significantly different…
Recoding quantitative variables into qualitative ones – techniques and their practical application
When analysing the data, we take into account both quantitative information (such as salary, age, n…
Automatic preparation of data for analysis
Data preparation plays a key role in data analysis and machine learning processes. Its importance s…