In the setting of Multiple Regression Model (MRM), what do we mean by linear statistical models? Give example of a non-linear MRM with two predictors.
Correlation
Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.
Linear Correlation
A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related.
Regression Analysis
Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.
Regression : It means to move in the backward direction.
Model : Models are of two types ->
1). Mathematical model ( we take exact value.)
2). Statistical model ( take cares of random variation, random variation is not on our control.)
Multiple Regression Model : A regression model that contain more than one input ( explanatory or regressor or independent ) variable.
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