# theory Tag

## 15 JanAssumptions of Linear Regression

Linear regression is one of the most popuar econometrics models. In this post you will learn that in order to define correctly a linear regression model, certain assumptions must be true....

## 14 JanA Brief Introduction to Linear Regression

Linear regression is one of the most popuar econometrics models. In this post we will make a gentle introduction to some mathematical formulas describing the linear regression process....

## 02 JanBasic Concepts in Time Series Analysis (Part-5)

In this fifth post of the series, we will present briefly the necessary steps in order to produce time series forecasts....

## 20 DecChecking for Stationarity in Time Series

In this post you will learn the steps to take in order to decide whether a time series is stationary or not by inspecting graphically and statistically the time series....

## 18 DecBasic Concepts in Time Series Analysis (Part-4)

In this post, the fourth of the sereis regarding time series analysis, we will discuss about stationarity, an important concept in time series analysis....

## 10 DecBasic Concepts in Time Series Analysis (Part-3)

In this third post about time series analysis, you will learn about the two main categories in forecasting modeling of time series....

## 05 DecBasic Concepts in Time Series Analysis (Part-2)

In this post we will discuss about time series components such as: seasonality, trend, cyclicality and irregularity....

## 12 NovBasic Concepts in Time Series Analysis (Part-1)

This post will be the first of a series of posts discussing about time series concepts. Here, we will briefly discuss on the definition of time series. Time series is a sequence of numerical data points in successive order (time). Their mathematical formulation is a...