can an incomplete pred model be used for regression test how to do a linear regression with no correlation what is the intercept of pred regression which is a simple regression of a pred model how to determine the intercept of a linear regression model how is the correlation between pred and obs calculated what is pred for linear regression how to find the correlation between pred and obs what is linear regression used for what would be the test used for predicting pred what p value is used to evaluate obs? what is the average correlation between pred & obs? how to test if intercept is zero how to find the intervals between obs and pred how to test slope coefficient in linear regression analysis what is the value in a regression model for predicting what is the average intercept for a linear regression model? if a linear regression model is used to predict observational data, how can i determine if it is a perfect fit? what is p value of intercept which is the best way to predict the interval in a linear regression model?