1 – Introduction

As far back as time goes, states have always felt the need to have information about their subjects or about the goods they own and produce. It was by developing mathematical tools that the scientists of the time could set up faithful representations of the...

2 – Different types of data

There is a whole set of data to study and not all of them study with the same tools. Understanding the different types of data makes it possible to choose the right tool. Introduction There is a whole set of data to study and not all of them study with the same tools....

3 – The terminology of statistics

A good understanding of statistics is to first understand the whole of a specific terminology. Introduction The statistical vocabulary is essentially that of demography. From the history of statistics, for centuries dedicated to the enumeration and description of...

4-The limits of a statistical study

“correlation is not causal”. It is a phrase repeatedly repeated in all the books. Correlation is not causal!   It is a phrase repeatedly repeated in all the books. It is important not to make an absolute reference to the results of a statistical...