0byt3m1n1
Path:
C:
/
Users
/
Administrator
/
SYSTAT
/
SYSTAT_13
/
Gallery
/
[
Home
]
File: Outliers and Influence (Linear Regression).syc
REM This item was created using OURWORLD, with DEATH_RT as the response, and BIRTH_RT as the predictor. TOKEN TOKEN &message / TYPE = MESSAGE PROMPT = 'This item is a diagnostic plot, for simple linear regression. It plots the predictor, against the response with the least squares regression, line added. Cases with studentized residuals greater, than |2| are labeled as outliers. Cases with Cook, distances exceeding .5 are labeled as influential.' TOKEN &outfile / TYPE = SAVE PROMPT = 'Save Temporary File' TOKEN &resp / TYPE = NVARIABLE PROMPT = 'Select the response variable.' TOKEN &pred / TYPE = NVARIABLE PROMPT = 'Select the predictor.' PUSH GRAPH GRAPH NONE REGRESS MODEL &resp = CONSTANT + &pred WORK &outfile / RESID DATA ESTIMATE GRAPH USE &outfile IF student >= 2 THEN LET istudent = 1 IF student <= -2 THEN LET istudent = 1 IF student < 2 AND student > -2 THEN LET istudent = 0 IF cook >= 0.5 THEN LET icook = 1 IF cook < 0.5 THEN LET icook = 0 BEGIN DRAW CIRCLE / LOC = {4.6IN, 3.6IN} HEIGHT = .1IN WIDTH = .1IN, COLOR = RED FILL = 1 DRAW CIRCLE / LOC = {4.6IN, 3.6IN} HEIGHT = .1IN WIDTH = .1IN, COLOR = BLUE FILL = 0 WRITE 'Outlier' / LOC = {4.8IN, 3.5IN} HEIGHT = .15 DRAW CIRCLE / LOC = {4.6IN, 3.4IN} HEIGHT = .1IN WIDTH = .1IN, COLOR = BLACK FILL = 1 WRITE 'Influential Case' / LOC = {4.8IN, 3.3IN} HEIGHT = .15 DRAW BOX / LOC = {4.3IN, 3IN} HEIGHT = 1IN WIDTH = 2IN PLOT &resp * &pred / SMOOTH = LINEAR TITLE = 'Outliers and Influence', SIZE = cook LTITLE = "Cook's Distance" LEGEND = {4.7IN, .2IN} PLOT &resp * &pred / GROUP = istudent OVERLAY COLOR = {BLUE, RED}, SYMBOL = {1, 1} SIZE = cook FILL = {0, 1} LEGEND = NONE PLOT &resp * &pred / GROUP = icook OVERLAY COLOR = {BLUE, BLACK}, SYMBOL = {1, 1} SIZE = cook FILL = {0, 1} LEGEND = NONE END POP GRAPH TOKEN