Doesn't look like there are outlier issues. Both X and Y are measured on 5 point scales. Here are the means and standard deviations:
Descriptive Statisticsa Mean Std. Deviation N Var X 2.9469 .84347 113 Var Y 3.0952 .70281 112 a. Red Group Descriptive Statisticsa Mean Std. Deviation N Var X 2.2219 .79934 196 Var Y 4.3140 .55183 198 a. Blue Group Descriptive Statistics Mean Std. Deviation N Var X 2.4871 .88631 309 Var Y 3.8737 .84584 310 Blue and Red Group Combined Any outliers when the full set is combined? That has the possibility of changing the direction of the relationship. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Dr. Lou Manza Professor and Chair of Psychology, & Director of the Youth Scholars Institute Lebanon Valley College, 101 North College Avenue, Annville, PA 17003 Phone: (717) 867-6193; Fax: (717) 867-6894; E-Mail: [email protected]<mailto:[email protected]> "Run when you can, walk when you have to, crawl if you must; just never give up." --- Dean Karnazes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - This e-mail is intended only for the personal and confidential use of the individual to whom it is addressed and may contain information that is privileged, confidential and protected by law. If you are not the intended recipient, you are hereby notified that any use or disclosure of this information is strictly prohibited. Your compliance is appreciated. From: Helweg-Larsen, Marie [mailto:[email protected]]<mailto:[mailto:[email protected]]> Sent: Monday, February 27, 2012 11:31 AM To: Teaching in the Psychological Sciences (TIPS) Subject: [tips] Statistical question-correlations Now what doesn't make sense to me that two groups individually have positive and significant correlations but the two groups combined can have a negative and significant correlation. So you stats tipsters. Is that statistically possible? I have checked everything I possibly can in terms of errors in the data or the analyses and have found none. Some suggestions about what I ought to look at? Marie Marie Helweg-Larsen, Ph.D. Associate Professor l Department of Psychology Kaufman 168 l Dickinson College Phone 717.245.1562 l Fax 717.245.1971 Office Hours: Mondays and Tuesdays 2:00-3:30 http://users.dickinson.edu/~helwegm/index.html --- --- You are currently subscribed to tips as: [email protected]<mailto:[email protected]>. To unsubscribe click here: http://fsulist.frostburg.edu/u?id=13234.b0e864a6eccfc779c8119f5a4468797f&n=T&l=tips&o=16295 (It may be necessary to cut and paste the above URL if the line is broken) or send a blank email to leave-16295-13234.b0e864a6eccfc779c8119f5a44687...@fsulist.frostburg.edu<mailto:leave-16295-13234.b0e864a6eccfc779c8119f5a44687...@fsulist.frostburg.edu> --- You are currently subscribed to tips as: [email protected]. To unsubscribe click here: http://fsulist.frostburg.edu/u?id=13090.68da6e6e5325aa33287ff385b70df5d5&n=T&l=tips&o=16298 or send a blank email to leave-16298-13090.68da6e6e5325aa33287ff385b70df...@fsulist.frostburg.edu
