# Blog

## Why do we use a regression model? ncss.com
Power Regression is one in which the response variable is proportional to the explanatory variable raised to a power. Since both the exponential form and the power form involve exponents, we can construct the models in similar fashion. We first take the log of both sides. For exponential data, we plot log of both sides.

## What are the different types of regression models?

• Popular types of time series regression models include: Autoregressive integrated moving average with exogenous predictors (ARIMAX). Regression model with ARIMA time series errors. Distributed lag model (DLM). Transfer function (autoregressive distributed lag) model.

## What is power regression/exponential regression?

• In power or exponential regression, the function is a power (polynomial) equation of the form or an exponential function in the form. Definition for line of best fit: A regression line is a straight line that describes how a response variable y changes as an explanatory variable x changes.

## How can I improve a multiple regression model?

• All In In this method,all the independent variables are included in the model. ...
• Backward Elimination It is a feature selection technique where all the insignificant features are eliminated. ...
• Forward Selection Opposite to the backward elimination method,this method starts with an empty model and adds independent variables one by one. ...

## Why do we use a regression model?Why do we use a regression model?

Regression model is used to find and determine a relationship between your variable of interest with some other variables.  ### What are the different types of regression models?What are the different types of regression models?

Popular types of time series regression models include: Autoregressive integrated moving average with exogenous predictors (ARIMAX). Regression model with ARIMA time series errors. Distributed lag model (DLM). Transfer function (autoregressive distributed lag) model.

### What is power regression/exponential regression?What is power regression/exponential regression?

In power or exponential regression, the function is a power (polynomial) equation of the form or an exponential function in the form. Definition for line of best fit: A regression line is a straight line that describes how a response variable y changes as an explanatory variable x changes.

### How can I improve a multiple regression model?How can I improve a multiple regression model?

Improve Multiple Linear Regression Model

• All In In this method, all the independent variables are included in the model. ...
• Backward Elimination It is a feature selection technique where all the insignificant features are eliminated. ...
• Forward Selection Opposite to the backward elimination method, this method starts with an empty model and adds independent variables one by one. ...