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What is the assumption of linearity in a logistic regression model? How can this be checked?

What is the assumption of linearity in a logistic regression model? How can this be checked?

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In case of simple linear regression there exists a linear relationship between dependant variable and the independant variables.

But in case of logistic regression there exists a linear relationship between log of dependant variable and the log of independant variables.

This linearity assumption can be verified by plotting the scattered plot and trendline for log of dependant variables and log of independant variables. This can be proved by finding the correlation coefficient for the above said graph and the value lies between -1 and 1

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