Question

What happens to r square when we move from simple linear regression to multiple linear regression?

Answer 1

the hcf and LCM of two number are 131 and 8253 respectively if one of the number is 917 find the other

Answer 2

When a simple linear regression move to multiple linear regression

• R-squared values increased typically.
• when adding to a variable can never decrease .
• If the fit is not fully perfect, then adding a variable that represents random data will increase the r-squared value with probability
• R-squared is  defined the % of the  variable  response and explained by a linear model.
• r-squared = Explained variation/Total variation
• Lying between 0 to 100%.

There are two possibility :-

• 0% of the model explains none of the variability of the response data around its mean.
• 100%of the variability of the response data around its mean.

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