Correlated predictors in a multiple regression model

@thulasi22ram wrote:

Hi Everyone,

I have learned in my linear models class that if two predictors are correlated and both are included in a model, one will be insignificant.

How does the variance of the regression coefficients get affected by including both predictors in the model or just having one?

How does including only one or including both predictors change the value/variance of my forecasted cost?

Thanks in advance for your help.

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