## Statistical and graphical analysis: univariate analysis

When we talk about univariate analysis, we will normally find elements such as: Histograms.Percentiles: The percentile (or centile) is the value of the variable below which a certain percentage of observations fall; for example, the 20th percentile is the value (or score) below which 20 per cent of the observations…

## Introduction to econometrics. Economic modelling

Before talking about economic modelling, it is necessary to understand what an econometric model is. Econometrics cannot explain perfectly the phenomena that occur in simple words. The best we can do is to use models, i.e. simplified representations of real phenomena. Economic modelling Where ω is the (logarithmic) wage, x…

## Introduction to econometrics. Essential mathematics and statistics

To talk about an introduction to econometrics, it is necessary to establish the mathematical and statistical foundations to understand it. Starting from the summation: Econometric summation The symbol Σ is the Greek capital letter sigma and means "the sum of".The letter i is called the summation index; this letter is arbitrary and…

## Introduction to econometrics. Concept

Many economists attribute the origin of the term econometrics to Ragnar Frisch, who was one of the winners of the Nobel Prize in Economics in 1969 together with economist Jan Tinbergen, as well as one of the founders of The Econometric Society in 1933. What is econometrics? Before defining what…

## Introduction to statistics. Conceptual framework

Scientific research is a concrete process that seeks to provide solutions to problems ranging from every day to the scientific level, which is why universality and objectivity must be its highest priority. It is not strange that the researcher can often encounter moments of uncertainty where he depends to a…