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Chai Biscuit
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Regression
What is Regression analysis?Regression is a statistical modelling for estimating a relationship between a dependent variable and one or more independent variables.
Regression Modelling
Establishing a functional relationship between a set of Explanatory or independent variables(X1,X2,X3) with response or dependent variable Y
Y=f(X1,X2,X3)
Types of Regression Model
1.OLS Regression
2.Exponential model
3.Logistic model(Binary/Multinomial)
4.Poission Model
Three Regresson Models(GLM)
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GLM ( Generalised Linear Models) extends the ordinary linear regressin and allow the response variable y to have an error distribution other than the normal distribution.
What is OLS Regression Analysis?
OLS Regression basically try to draw the best fit regession line- a line such that the sum of the squared deviations of the distances of all the points to the line is minimized.
Assumption:
OLS regression models assumes that the underlying relationship between two variables can best be described by a line.
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