Re: hierarchical linear modeling?
Thanks for your reply. I hadn't thought about it from that perspective. The structure is that these are medical students doing rotations, and evaluating their professor for each rotation. The rotations last 6 weeks. >From: Donald Burrill <[EMAIL PROTECTED]> >To: Karen Scheltema <[EMAIL PROTECTED]> >CC: [EMAIL PROTECTED] >Subject: Re: hierarchical linear modeling? >Date: Fri, 7 Jul 2000 12:49:01 -0400 (EDT) > >Hi, Karen! Interesting problem. You mention students (each of which has >made a variable multiplicity of ratings on professors), and professors >(each of which has received a variable multiplicity of ratings from >students). You do not mention courses. Are all these ratings for a >single course? (If so, how do you get up to 40 ratings from one >student??) If not, I'd be inclined to divide the data by course: >a professor's "teaching style/ability" might well be different, or >perceived differently, in different courses. > If students do not have multiple professors for a given course, >this might simplify the structure of your data enough to make the >problem tractable. Do there exist replicates (more than one rating of a >given professor by a given student in a given course)? > If students do have multiple professors in a course, can the >course be separated into components each of which had only one professor? >This again would simplify the analytical problem. > Good luck! -- Don. > >On Thu, 6 Jul 2000, Karen Scheltema wrote: > > > I need some advice about a data set I've inherited. In the data, > > students have rated professors on their teaching style/ability. The > > problem is that students complete several evaluations of different > > professors as they go through their rotations. A student may have > > completed as many as 40 evaluations. In addition, each professor has > > been evaluated by many students. The research question is looking at > > various components of teaching ratings to predict overall satisfaction. > > What I'm struggling with is how to account for the multiple ratings by > > each student, as well as the fact that each professor has multiple > > ratings. I was initially thinking of hierarchical linear modeling, > > with student being a level of the hierarchical model. That leaves me > > wondering how to handle the multiple ratings of each professor. Any > > advice on how to analyze this data set would be greatly appreciated. > > > Karen Scheltema, M.A., M.S. > > Statistician > > HealthEast > > 1700 University Ave W > > St. Paul, MN 55104 > > (651) 232-5212 fax: (651) 641-0683 > > > Donald F. Burrill [EMAIL PROTECTED] > 348 Hyde Hall, Plymouth State College, [EMAIL PROTECTED] > MSC #29, Plymouth, NH 03264 603-535-2597 > 184 Nashua Road, Bedford, NH 03110 603-471-7128 > Karen Scheltema, M.A., M.S. Statistician HealthEast Office of Research and Medical Education 1700 University Ave W St. Paul, MN 55104 (651) 232-5212 fax: (651) 641-0683 Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com === Instructions for joining and leaving this list and remarks about the problem of INAPPROPRIATE MESSAGES are available at http://jse.stat.ncsu.edu/ ===
hierarchical linear modeling?
I need some advice about a data set I've inherited. In the data, students have rated professors on their teaching style/ability. The problem is that students complete several evaluations of different professors as they go through their rotations. A student may have completed as many as 40 evaluations. In addition, each professor has been evaluated by many students. The research question is looking at various components of teaching ratings to predict overall satisfaction. What I'm struggling with is how to account for the multiple ratings by each student, as well as the fact that each professor has multiple ratings. I was initially thinking of hierarchical linear modeling, with student being a level of the hierarchical model. That leaves me wondering how to handle the multiple ratings of each professor. Any advice on how to analyze this data set would be greatly appreciated. Karen Scheltema, M.A., M.S. Statistician HealthEast 1700 University Ave W St. Paul, MN 55104 (651) 232-5212 fax: (651) 641-0683 Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com === This list is open to everyone. Occasionally, less thoughtful people send inappropriate messages. Please DO NOT COMPLAIN TO THE POSTMASTER about these messages because the postmaster has no way of controlling them, and excessive complaints will result in termination of the list. For information about this list, including information about the problem of inappropriate messages and information about how to unsubscribe, please see the web page at http://jse.stat.ncsu.edu/ ===
sample size program for regression
Does anybody know of a asmple size program for regressoin? I seem to remember a program called R2, but a search of the Web didn't turn up anything. Also, does anybody know of a sample size program for logistic regression? TIA Karen Scheltema, M.A., M.S. Statistician HealthEast 1700 University Ave W St. Paul, MN 55104 (651) 232-5212 fax: (651) 641-0683 Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com === This list is open to everyone. Occasionally, less thoughtful people send inappropriate messages. Please DO NOT COMPLAIN TO THE POSTMASTER about these messages because the postmaster has no way of controlling them, and excessive complaints will result in termination of the list. For information about this list, including information about the problem of inappropriate messages and information about how to unsubscribe, please see the web page at http://jse.stat.ncsu.edu/ ===
VIF
What is the usual cutoff for saying the VIF is too high? Karen Scheltema, M.A., M.S. Statistician HealthEast 1700 University Ave W St. Paul, MN 55104 (651) 232-5212 fax: (651) 641-0683 Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com === This list is open to everyone. Occasionally, less thoughtful people send inappropriate messages. Please DO NOT COMPLAIN TO THE POSTMASTER about these messages because the postmaster has no way of controlling them, and excessive complaints will result in termination of the list. For information about this list, including information about the problem of inappropriate messages and information about how to unsubscribe, please see the web page at http://jse.stat.ncsu.edu/ ===
partial least squares regression
Can someone emlighten me about how partial least squares regression works to handle multicollinearity. Can SPSS do partial least squares regression? Karen Scheltema, M.A., M.S. Statistician HealthEast 1700 University Ave W St. Paul, MN 55104 (651) 232-5212 fax: (651) 641-0683 Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com === This list is open to everyone. Occasionally, less thoughtful people send inappropriate messages. Please DO NOT COMPLAIN TO THE POSTMASTER about these messages because the postmaster has no way of controlling them, and excessive complaints will result in termination of the list. For information about this list, including information about the problem of inappropriate messages and information about how to unsubscribe, please see the web page at http://jse.stat.ncsu.edu/ ===
Re: mode
It displays the smallest value for the mode, with a footnote that there are multiple modes. Karen Scheltema, M.A., M.S. Statistician North Memorial Health Care Quality Resources Dept. 3300 Oakdale Ave N Robbinsdale, MN 55422 (612) 520-2744(612) 520-4686 (fax) [EMAIL PROTECTED] >>> dennis roberts <[EMAIL PROTECTED]> 02/29/00 11:43AM >>> what will it display if you have a distribution where there are 2 peak points ... with equal frequencies? At 11:33 AM 02/29/2000 -0600, you wrote: >SPSS has a statistic that displays the mode. In fact, you can display it >and not the frequency table. > >Karen Scheltema, M.A., M.S. >Statistician >North Memorial Health Care >Quality Resources Dept. >3300 Oakdale Ave N >Robbinsdale, MN 55422 >(612) 520-2744(612) 520-4686 (fax) >[EMAIL PROTECTED] > > > >>> dennis roberts <[EMAIL PROTECTED]> 02/29/00 10:45AM >>> >i use minitab and it does not display anywhere the mode (not saying it >should) ... does anyone who uses any other software know if your software >displays mode/modes in any command or output display? (i don't mean a >frequency distribution where YOU can locate it ... but, rather ... it lists >AS the mode/modes ... values) > > > >=== >This list is open to everyone. Occasionally, less thoughtful >people send inappropriate messages. Please DO NOT COMPLAIN TO >THE POSTMASTER about these messages because the postmaster has no >way of controlling them, and excessive complaints will result in >termination of the list. > >For information about this list, including information about the >problem of inappropriate messages and information about how to >unsubscribe, please see the web page at >http://jse.stat.ncsu.edu/ >=== === This list is open to everyone. Occasionally, less thoughtful people send inappropriate messages. Please DO NOT COMPLAIN TO THE POSTMASTER about these messages because the postmaster has no way of controlling them, and excessive complaints will result in termination of the list. For information about this list, including information about the problem of inappropriate messages and information about how to unsubscribe, please see the web page at http://jse.stat.ncsu.edu/ ===
Re: mode
SPSS has a statistic that displays the mode. In fact, you can display it and not the frequency table. Karen Scheltema, M.A., M.S. Statistician North Memorial Health Care Quality Resources Dept. 3300 Oakdale Ave N Robbinsdale, MN 55422 (612) 520-2744(612) 520-4686 (fax) [EMAIL PROTECTED] >>> dennis roberts <[EMAIL PROTECTED]> 02/29/00 10:45AM >>> i use minitab and it does not display anywhere the mode (not saying it should) ... does anyone who uses any other software know if your software displays mode/modes in any command or output display? (i don't mean a frequency distribution where YOU can locate it ... but, rather ... it lists AS the mode/modes ... values) === This list is open to everyone. Occasionally, less thoughtful people send inappropriate messages. Please DO NOT COMPLAIN TO THE POSTMASTER about these messages because the postmaster has no way of controlling them, and excessive complaints will result in termination of the list. For information about this list, including information about the problem of inappropriate messages and information about how to unsubscribe, please see the web page at http://jse.stat.ncsu.edu/ === === This list is open to everyone. Occasionally, less thoughtful people send inappropriate messages. Please DO NOT COMPLAIN TO THE POSTMASTER about these messages because the postmaster has no way of controlling them, and excessive complaints will result in termination of the list. For information about this list, including information about the problem of inappropriate messages and information about how to unsubscribe, please see the web page at http://jse.stat.ncsu.edu/ ===
Re: biostatistics
I have found that a course in medical terminology has been the most helpful background outside of the traditional statistics and biostatistics courses. When I got my biostats masters, a course in medical terminology was required. Working in a hospital, I find that course is still a lifesaver for me in facilitating communication between researchers and myself. Karen Scheltema, M.A., M.S. Statistician North Memorial Health Care Quality Resources Dept. 3300 Oakdale Ave N Robbinsdale, MN 55422 (612) 520-2744(612) 520-4686 (fax) [EMAIL PROTECTED] >>> <[EMAIL PROTECTED]> 02/23/00 01:21PM >>> First, I would like to say thank you for the responses that I got to my question about computing. Secondly, I have a question about the topic of biostatistics, which perhaps someone can answer as well. Specifically, how extensive does one's background in science have to be, in order to be proficient in biostatistics? My undergraduate degree is in mathematics, and I have some background in general chemistry and physics. I definitely plan to take at least a year of biology, but I am also wondering if I should take a course in organic chemistry as well. Although I intend to major in applied statistics, I have noticed that some graduate schools have biostatistics programs that require very little background in science, while others require more advanced science courses. Any information would be greatly appreciated. Sincerely, Thomas Souers === This list is open to everyone. Occasionally, less thoughtful people send inappropriate messages. Please DO NOT COMPLAIN TO THE POSTMASTER about these messages because the postmaster has no way of controlling them, and excessive complaints will result in termination of the list. For information about this list, including information about the problem of inappropriate messages and information about how to unsubscribe, please see the web page at http://jse.stat.ncsu.edu/ === === This list is open to everyone. Occasionally, less thoughtful people send inappropriate messages. Please DO NOT COMPLAIN TO THE POSTMASTER about these messages because the postmaster has no way of controlling them, and excessive complaints will result in termination of the list. For information about this list, including information about the problem of inappropriate messages and information about how to unsubscribe, please see the web page at http://jse.stat.ncsu.edu/ ===
