what is the consequence of a correlation analysis of two models how do ols analysis results show difference in regression coefficient what is the outcome from the comparison of two models why do firms have different cost functions what is the consequences for the regression coefficient estimates derived above if the two firms actually have different regression coefficients but doubted the error variances are the same? what is the correlation between the cost functions of the two firms what is the consequence of each regression? what model model would have the same coefficient for the same period what is the consequence of the comparison of two models? what are the consequences from the comparison of two models? how to model cost functions for firms comparing two models to determine the coefficients of variation? cost variance correlation analysis of two firms using ols what are the consequences what is the effect of the two firms on the coefficient of error compared? what is the relationship between cost function and regression coefficient what are the consequences if the coefficients of regression for the two firms are the same? what is the difference between a firm model and a time series model? what is the relationship between the error variance, the regression and the coefficient of each firm's model? what is the correlation coefficient for a model