Y5

Suppose the true model has 5 independent variables, X2, ..., X6, along with an intercept. What happens if you omit X3 in your regression analysis? O The estimates of regression coefficients can be different from those of the true model. The standard errors of the coefficients can be different from those of the true model The intercept value can be different from that of the true model. O R' can be different from that of the true model. O All are possible. 10 1 point Below you have two datasets, each of them with two explanatory variables X2, X3 (plus the intercept). Dataset 1 Dataset 2 X2 X3 Y X2 X3 5 26 1 13 2 6 31 3 7 8 41 5 9 4 9 46 6 11 11 56 8 6 12 61 Which dataset present(s) a problem of exact collinearity? O Dataset 1 only O Dataset 2 only Both datasets None of them O Cannot be answered with the information provided