input id x y 1 1 2 2 3 3 3 5 6 4 7 5 5 9 9 end summarize x y correlate x y regress y x predict yhat predict resid, residual predict zresid, rstandard plot y x graph y yhat x, connect(.s) plot resid x plot zresid x ----------------------------------------------- summarize x y Variable | Obs Mean Std. Dev. Min Max ---------+----------------------------------------------------- x | 5 5 3.162278 1 9 y | 5 5 2.738613 2 9 correlate x y (obs=5) | x y ---------+------------------ x | 1.0000 y | 0.9238 1.0000 regress y x Source | SS df MS Number of obs = 5 ---------+------------------------------ F( 1, 3) = 17.45 Model | 25.60 1 25.60 Prob > F = 0.0250 Residual | 4.40 3 1.46666667 R-squared = 0.8533 ---------+------------------------------ Adj R-squared = 0.8044 Total | 30.00 4 7.50 Root MSE = 1.2111 ------------------------------------------------------------------------------ y | Coef. Std. Err. t P>|t| [95% Conf. Interval] ---------+-------------------------------------------------------------------- x | .8 .1914854 4.178 0.025 .1906079 1.409392 _cons | 1 1.1 0.909 0.430 -2.500691 4.500691 ------------------------------------------------------------------------------ predict yhat predict resid, residual predict zresid, rstandard plot y x 9 + | * | | | | | | | | y | * | | * | | | | | | * | 2 + * +----------------------------------------------------------------+ 1 x 9 graph y yhat x, connect(.s) plot resid x 1 + | * | | * | | R | e | * s | i | d | u | a | * l | s | | | | | | -1.6 + * +----------------------------------------------------------------+ 1 x 9 plot zresid x 1.04447 + S | * t | * a | n | d | a | r | * d | i | z | e | d | * | r | e | s | i | d | u | -1.57908 + * +----------------------------------------------------------------+ 1 x 9