SAS TIP OF THE DAY: THE _CHARACTER_ ARRAY AND FIXING ALL Contrary to appearances, this is not an abandoned blog. I’ve been super-busy with 7 Generation Games, where we released two new games and a customized app for a client this month! At the same time, I’m in Santiago, Chile piloting games for our Spanish language brand, Strong Mind Studios, you can read some of my blog in Spanish here. SUPER-EASY FIX TO SAS LIBNAME / MISSING DIRECTORY Blogroll. Andrew Gelman's statistics blog - is far more interesting than the name; Biological research made interesting; Interesting economics blog; Love Stats Blog - How can you not love a market research blog with a name like that?; Me, twitter - Thoughts on stats; SAS Blog for the rest of us - Not as funny as some, but twice as smart. If this is for the rest of us, who are those other people? ANYTHING THAT EXISTS CAN BE MEASURED : ANNMARIA'S BLOG Anything that exists can be measured. Out of all the thousands of pages of all of the textbooks you ever read in your life, how many sentences can you remember? One that has remained with me for over twenty years was in the required book for my inferential statistics course, “If something exists, it must exist in some quantity and

that

A BEGINNER’S GUIDE TO PROPENSITY SCORE MATCHING : ANNMARIA A Beginner’s Guide to Propensity Score Matching. One advantage of writing this blog for almost a decade is that there are a lots of topics I have already covered. However, software moving at the speed that it does, there are always updates. So, today I’m going to recycle a couple of older posts that introduce you to propensity score

matching.

HOW DO I WRITE A STATISTICAL ANALYSIS PAPER? ADVICE TO Really Great article, Amazing Write Up, I can agree with your point of view. Much appreciation for the information, Really interesting article, It’s well-structured and has good visual description, I would like to thank you for putting the time together to construct

this article.

REPEATED MEASURES WITH SAS: COMMON MISTAKES IN PROC GLM model pretest posttest follow = /nouni ; repeated test_time 3 contrast (1) /summary ; What this will do is compare each of the other time points to the first one. A common mistake students make is to use a CONTRAST statement here with test_time. This will NOT work, although it will work with PROC MIXED, but that is a story for another day. LSMESTIMATE STATEMENT First coolness thing about the LSMESTIMATE statement is that it is easier to write. Here ( from the SAS documentation) is an example of the ESTIMATE statement replaced by LSMESTIMATE. Not only is it a lot less trouble to write, and, I think, to interpret, but, I have very bad vision. I wear nuclear-strength contacts to see past the end of my WHAT WOULD YOU DO IF YOU WEREN’T DOING THIS? : ANNMARIA'S BLOG My first answer would be to protest, “But I WANT to be doing this.”. It’s not that I haven’t thought about it. If I was not working, I could be doing any of these things: Going to the Aquarium of the Pacific with my family (I have a membership), Going to Disneyland ( I have a SAS ENTERPRISE MINER NOT WORKING? HERE’S WHY (MAYBE If you try setting up your account and Enterprise Miner does not work, as in, failed to start, your problem may be that you have the wrong version of Java enabled. You may have been fooled by the system requirements for Enterprise Miner which said: {Warning incorrect information between lines} HOW TO FIX YOUR SPSS TRUNCATED DATA FILE : ANNMARIA'S BLOG Blogroll. Andrew Gelman's statistics blog - is far more interesting than the name; Biological research made interesting; Interesting economics blog; Love Stats Blog - How can you not love a market research blog with a name like that?; Me, twitter - Thoughts on stats; SAS Blog for the rest of us - Not as funny as some, but twice as smart. If this is for the rest of us, who are those other people? SAS TIP OF THE DAY: THE _CHARACTER_ ARRAY AND FIXING ALL Contrary to appearances, this is not an abandoned blog. I’ve been super-busy with 7 Generation Games, where we released two new games and a customized app for a client this month! At the same time, I’m in Santiago, Chile piloting games for our Spanish language brand, Strong Mind Studios, you can read some of my blog in Spanish here. SUPER-EASY FIX TO SAS LIBNAME / MISSING DIRECTORY Blogroll. Andrew Gelman's statistics blog - is far more interesting than the name; Biological research made interesting; Interesting economics blog; Love Stats Blog - How can you not love a market research blog with a name like that?; Me, twitter - Thoughts on stats; SAS Blog for the rest of us - Not as funny as some, but twice as smart. If this is for the rest of us, who are those other people? ANYTHING THAT EXISTS CAN BE MEASURED : ANNMARIA'S BLOG Anything that exists can be measured. Out of all the thousands of pages of all of the textbooks you ever read in your life, how many sentences can you remember? One that has remained with me for over twenty years was in the required book for my inferential statistics course, “If something exists, it must exist in some quantity and

that

A BEGINNER’S GUIDE TO PROPENSITY SCORE MATCHING : ANNMARIA A Beginner’s Guide to Propensity Score Matching. One advantage of writing this blog for almost a decade is that there are a lots of topics I have already covered. However, software moving at the speed that it does, there are always updates. So, today I’m going to recycle a couple of older posts that introduce you to propensity score

matching.

HOW DO I WRITE A STATISTICAL ANALYSIS PAPER? ADVICE TO Really Great article, Amazing Write Up, I can agree with your point of view. Much appreciation for the information, Really interesting article, It’s well-structured and has good visual description, I would like to thank you for putting the time together to construct

this article.

REPEATED MEASURES WITH SAS: COMMON MISTAKES IN PROC GLM model pretest posttest follow = /nouni ; repeated test_time 3 contrast (1) /summary ; What this will do is compare each of the other time points to the first one. A common mistake students make is to use a CONTRAST statement here with test_time. This will NOT work, although it will work with PROC MIXED, but that is a story for another day. LSMESTIMATE STATEMENT First coolness thing about the LSMESTIMATE statement is that it is easier to write. Here ( from the SAS documentation) is an example of the ESTIMATE statement replaced by LSMESTIMATE. Not only is it a lot less trouble to write, and, I think, to interpret, but, I have very bad vision. I wear nuclear-strength contacts to see past the end of my WHAT WOULD YOU DO IF YOU WEREN’T DOING THIS? : ANNMARIA'S BLOG My first answer would be to protest, “But I WANT to be doing this.”. It’s not that I haven’t thought about it. If I was not working, I could be doing any of these things: Going to the Aquarium of the Pacific with my family (I have a membership), Going to Disneyland ( I have a SAS ENTERPRISE MINER NOT WORKING? HERE’S WHY (MAYBE If you try setting up your account and Enterprise Miner does not work, as in, failed to start, your problem may be that you have the wrong version of Java enabled. You may have been fooled by the system requirements for Enterprise Miner which said: {Warning incorrect information between lines} HOW TO FIX YOUR SPSS TRUNCATED DATA FILE : ANNMARIA'S BLOG Blogroll. Andrew Gelman's statistics blog - is far more interesting than the name; Biological research made interesting; Interesting economics blog; Love Stats Blog - How can you not love a market research blog with a name like that?; Me, twitter - Thoughts on stats; SAS Blog for the rest of us - Not as funny as some, but twice as smart. If this is for the rest of us, who are those other people? BOX AND WHISKER PLOTS Box and whisker plots – they’re not just fun to say! Box and whisker plots can give you an understanding of your data at a glance – IF you know what you’re looking at. The BOX extends from the 25th percentile to the 75th percentile. That line in the middle is the median, also known as the 50th percentile. REPEATED MEASURES WITH SAS: COMMON MISTAKES IN PROC GLM model pretest posttest follow = /nouni ; repeated test_time 3 contrast (1) /summary ; What this will do is compare each of the other time points to the first one. A common mistake students make is to use a CONTRAST statement here with test_time. This will NOT work, although it will work with PROC MIXED, but that is a story for another day. A QUICK INTRODUCTION TO INTERPRETATION OF EXPLORATORY Blogroll. Andrew Gelman's statistics blog - is far more interesting than the name; Biological research made interesting; Interesting economics blog; Love Stats Blog - How can you not love a market research blog with a name like that?; Me, twitter - Thoughts on stats; SAS Blog for the rest of us - Not as funny as some, but twice as smart. If this is for the rest of us, who are those other people? WHAT WOULD YOU DO IF YOU WEREN’T DOING THIS? : ANNMARIA'S BLOG My first answer would be to protest, “But I WANT to be doing this.”. It’s not that I haven’t thought about it. If I was not working, I could be doing any of these things: Going to the Aquarium of the Pacific with my family (I have a membership), Going to Disneyland ( I have a PLOTTING AGREEMENT WITH KAPPA PLOTS FROM PROC FREQ PROC FREQ DATA =datasetname ; TABLES variable1*variable2 / PLOTS = KAPPAPLOT; TEST AGREE ; Including the ODS GRAPHICS ON statement and the PLOTS = KAPPAPLOT option in your TABLES statement will give you a plot of both the agreement and distribution of ratings. Personally, I find the kappa plots, like the example below, to be pretty helpful. FLOOR EFFECT, CEILING EFFECT AND COMPUTING INTERNAL The same test could not have both floor and ceiling effects for the same subjects. Most of the subjects could not score near the top and

near the bottom.

6 THINGS ABOUT STATISTICS EVERYONE MUST KNOW : ANNMARIA'S BLOG 2. Correlation and regression – A basic understanding and application of statistics is the knowledge of relationships, how you measure relationships, how you interpret them. 3. Group mean differences – Yes, mathematically you can couch this as a regression problem and they should probably understand a little about that. WHAT DO WHEN DATES IN YOUR EXCEL FILE ARE OFF BY FOUR If you paste data from a Macintosh file into a PC file you can end up with dates that are off by four years and one day. You can correct this in Excel. Microsoft gives a solution here: You can correct shifted dates by following these steps: In an empty cell, enter the value 1462. Select the cell. On the Edit menu, click Copy.

PREDICTOR VARIABLES

Predictor variables – when order does and does not matter. Having failed recently to use BMI as a variable from a data set on school children in our example for propensity score matching, because people who fill out surveys are big, fat liars, we next went to a sample of really old people and used death as a dependent variable. SHOULD TRANSGENDER ATHLETES COMPETE IN WOMEN’S MMA: THE A lot of people asked and debated this question before me. My first point was to say that those in the debate who claimed there was a great deal of scientific evidence to document that a transgender woman has no advantage were, as far as I can determine, incorrect, as I could not find any documentation and to date, no one, including you,

has pointed to any.

CROSSROADS: GAME OF CHOICES Welcome! What happens next is up to you. That is the message in the introductory movie of Crossroads: New Decisions. It’s also our message for our user community, both youth and professionals. Here you’ll find everything you need to use Crossroads software in your efforts to understand and aid youth in the choices they face in life.

YouTube.

SUPER-EASY FIX TO SAS LIBNAME / MISSING DIRECTORYSAS LIBNAME DOES NOT

EXIST

Blogroll. Andrew Gelman's statistics blog - is far more interesting than the name; Biological research made interesting; Interesting economics blog; Love Stats Blog - How can you not love a market research blog with a name like that?; Me, twitter - Thoughts on stats; SAS Blog for the rest of us - Not as funny as some, but twice as smart. If this is for the rest of us, who are those other people? SAS TIP OF THE DAY: THE _CHARACTER_ ARRAY AND FIXING ALLGET SIZE OF CHAR ARRAYCHAR ARRAY IN CCHAR TO CHAR ARRAYCONST CHAR TO CHAR ARRAYCOPY CHAR TO CHAR ARRAYSTRING ARRAY TO CHAR Contrary to appearances, this is not an abandoned blog. I’ve been super-busy with 7 Generation Games, where we released two new games and a customized app for a client this month! At the same time, I’m in Santiago, Chile piloting games for our Spanish language brand, Strong Mind Studios, you can read some of my blog in Spanish here. ANYTHING THAT EXISTS CAN BE MEASURED : ANNMARIA'S BLOG Anything that exists can be measured. Out of all the thousands of pages of all of the textbooks you ever read in your life, how many sentences can you remember? One that has remained with me for over twenty years was in the required book for my inferential statistics course, “If something exists, it must exist in some quantity and

that

THE F-STATISTIC IN ANOVA EXPLAINED : ANNMARIA'S BLOG Square that. Second, multiply by the number in each group. Third, add the result. Fourth, divide by the number of groups minus 1. Let’s just suppose, for the sake of supposing, that the value you get for this is 108. Your F-ratio is then 108/42 = 2.57. And that, my dears is

you get an F value.

REPEATED MEASURES WITH SAS: COMMON MISTAKES IN PROC GLM model pretest posttest follow = /nouni ; repeated test_time 3 contrast (1) /summary ; What this will do is compare each of the other time points to the first one. A common mistake students make is to use a CONTRAST statement here with test_time. This will NOT work, although it will work with PROC MIXED, but that is a story for another day. WHAT WOULD YOU DO IF YOU WEREN’T DOING THIS? : ANNMARIA'S BLOG My first answer would be to protest, “But I WANT to be doing this.”. It’s not that I haven’t thought about it. If I was not working, I could be doing any of these things: Going to the Aquarium of the Pacific with my family (I have a membership), Going to Disneyland ( I have a HOW TO FIX YOUR SPSS TRUNCATED DATA FILE : ANNMARIA'S BLOGRIGHT TRUNCATED DATALEFT TRUNCATED DATATRUNCATED DATA DEFINITIONEXAMPLES OF SPSS DATASPSS DATA SETSWHAT IS TRUNCATED FILE Blogroll. Andrew Gelman's statistics blog - is far more interesting than the name; Biological research made interesting; Interesting economics blog; Love Stats Blog - How can you not love a market research blog with a name like that?; Me, twitter - Thoughts on stats; SAS Blog for the rest of us - Not as funny as some, but twice as smart. If this is for the rest of us, who are those other people? SAS ENTERPRISE MINER NOT WORKING? HERE’S WHY (MAYBE If you try setting up your account and Enterprise Miner does not work, as in, failed to start, your problem may be that you have the wrong version of Java enabled. You may have been fooled by the system requirements for Enterprise Miner which said: {Warning incorrect information between lines} MOVING FROM DATA TO INFORMATION: SAS PROGRAMMING TO REDUCE 1 Moving from data to information: SAS programming to reduce statistical and programming errors AnnMaria De Mars, University of Southern California, Los Angeles, CA CROSSROADS: GAME OF CHOICES Welcome! What happens next is up to you. That is the message in the introductory movie of Crossroads: New Decisions. It’s also our message for our user community, both youth and professionals. Here you’ll find everything you need to use Crossroads software in your efforts to understand and aid youth in the choices they face in life.

YouTube.

SUPER-EASY FIX TO SAS LIBNAME / MISSING DIRECTORYSAS LIBNAME DOES NOT

EXIST

Blogroll. Andrew Gelman's statistics blog - is far more interesting than the name; Biological research made interesting; Interesting economics blog; Love Stats Blog - How can you not love a market research blog with a name like that?; Me, twitter - Thoughts on stats; SAS Blog for the rest of us - Not as funny as some, but twice as smart. If this is for the rest of us, who are those other people? SAS TIP OF THE DAY: THE _CHARACTER_ ARRAY AND FIXING ALLGET SIZE OF CHAR ARRAYCHAR ARRAY IN CCHAR TO CHAR ARRAYCONST CHAR TO CHAR ARRAYCOPY CHAR TO CHAR ARRAYSTRING ARRAY TO CHAR Contrary to appearances, this is not an abandoned blog. I’ve been super-busy with 7 Generation Games, where we released two new games and a customized app for a client this month! At the same time, I’m in Santiago, Chile piloting games for our Spanish language brand, Strong Mind Studios, you can read some of my blog in Spanish here. ANYTHING THAT EXISTS CAN BE MEASURED : ANNMARIA'S BLOG Anything that exists can be measured. Out of all the thousands of pages of all of the textbooks you ever read in your life, how many sentences can you remember? One that has remained with me for over twenty years was in the required book for my inferential statistics course, “If something exists, it must exist in some quantity and

that

THE F-STATISTIC IN ANOVA EXPLAINED : ANNMARIA'S BLOG Square that. Second, multiply by the number in each group. Third, add the result. Fourth, divide by the number of groups minus 1. Let’s just suppose, for the sake of supposing, that the value you get for this is 108. Your F-ratio is then 108/42 = 2.57. And that, my dears is

you get an F value.

REPEATED MEASURES WITH SAS: COMMON MISTAKES IN PROC GLM model pretest posttest follow = /nouni ; repeated test_time 3 contrast (1) /summary ; What this will do is compare each of the other time points to the first one. A common mistake students make is to use a CONTRAST statement here with test_time. This will NOT work, although it will work with PROC MIXED, but that is a story for another day. WHAT WOULD YOU DO IF YOU WEREN’T DOING THIS? : ANNMARIA'S BLOG My first answer would be to protest, “But I WANT to be doing this.”. It’s not that I haven’t thought about it. If I was not working, I could be doing any of these things: Going to the Aquarium of the Pacific with my family (I have a membership), Going to Disneyland ( I have a HOW TO FIX YOUR SPSS TRUNCATED DATA FILE : ANNMARIA'S BLOGRIGHT TRUNCATED DATALEFT TRUNCATED DATATRUNCATED DATA DEFINITIONEXAMPLES OF SPSS DATASPSS DATA SETSWHAT IS TRUNCATED FILE Blogroll. Andrew Gelman's statistics blog - is far more interesting than the name; Biological research made interesting; Interesting economics blog; Love Stats Blog - How can you not love a market research blog with a name like that?; Me, twitter - Thoughts on stats; SAS Blog for the rest of us - Not as funny as some, but twice as smart. If this is for the rest of us, who are those other people? SAS ENTERPRISE MINER NOT WORKING? HERE’S WHY (MAYBE If you try setting up your account and Enterprise Miner does not work, as in, failed to start, your problem may be that you have the wrong version of Java enabled. You may have been fooled by the system requirements for Enterprise Miner which said: {Warning incorrect information between lines} MOVING FROM DATA TO INFORMATION: SAS PROGRAMMING TO REDUCE 1 Moving from data to information: SAS programming to reduce statistical and programming errors AnnMaria De Mars, University of Southern California, Los Angeles, CA CROSSROADS: GAME OF CHOICES Crossroads: Choices – for players age 9-13. Topics covered include risk of child sexual abuse, exposure to domestic violence in the home, and creating a safety plan. Data from the CES-DC depression scale for children is collected and scored in the app. REPEATED MEASURES WITH SAS: COMMON MISTAKES IN PROC GLM model pretest posttest follow = /nouni ; repeated test_time 3 contrast (1) /summary ; What this will do is compare each of the other time points to the first one. A common mistake students make is to use a CONTRAST statement here with test_time. This will NOT work, although it will work with PROC MIXED, but that is a story for another day. LSMESTIMATE STATEMENT First coolness thing about the LSMESTIMATE statement is that it is easier to write. Here ( from the SAS documentation) is an example of the ESTIMATE statement replaced by LSMESTIMATE. Not only is it a lot less trouble to write, and, I think, to interpret, but, I have very bad vision. I wear nuclear-strength contacts to see past the end of my THE F-STATISTIC IN ANOVA EXPLAINED : ANNMARIA'S BLOG Square that. Second, multiply by the number in each group. Third, add the result. Fourth, divide by the number of groups minus 1. Let’s just suppose, for the sake of supposing, that the value you get for this is 108. Your F-ratio is then 108/42 = 2.57. And that, my dears is

you get an F value.

CONFIRMATORY FACTOR ANALYSIS WITH AMOS: OMG IT’S THIS Today, I needed to do a confirmatory factor analysis with someone using AMOS. They wanted it in AMOS so that is what I did. All the parameter estimates came out correctly, model fit indices good. The only problem is that I knew that they would want the estimates on the diagram and I could not remember how to do it. HOW DO I WRITE A STATISTICAL ANALYSIS PAPER? ADVICE TO Really Great article, Amazing Write Up, I can agree with your point of view. Much appreciation for the information, Really interesting article, It’s well-structured and has good visual description, I would like to thank you for putting the time together to construct

this article.

FLOOR EFFECT, CEILING EFFECT AND COMPUTING INTERNAL The same test could not have both floor and ceiling effects for the same subjects. Most of the subjects could not score near the top and

near the bottom.

RANDOM SAS TIPS: MIXED DATA TYPES : ANNMARIA'S BLOG Random SAS tips: Mixed data types. This week I had one of those pain-in-the-ass problems. I had a test with 24 items but they were of mixed types. That is, for some the answer was multiple choice and for others it was numbers. The data was received as an Excel file. Now, I could have opened it with SAS Enterprise Guide and specified data

types

6 THINGS ABOUT STATISTICS EVERYONE MUST KNOW : ANNMARIA'S BLOG 2. Correlation and regression – A basic understanding and application of statistics is the knowledge of relationships, how you measure relationships, how you interpret them. 3. Group mean differences – Yes, mathematically you can couch this as a regression problem and they should probably understand a little about that. “MIXED REVIEWS”: AN INTRODUCTION TO PROC MIXED ANNMARIA DE MARS, PH.D. THE JULIA GROUP SANTA MONICA, CA “Mixed Reviews”: An Introduction to Proc Mixed Skip to primary content

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THE JULIA GROUP is a collaboration of professionals with expertise in statistics, mathematics, instructional technology, programming and evaluation. Our clients are predominantly educational, social service and contract research organizations who are experts in their own fields but need some additional staff in our specialty areas. WE’RE THE FIRST TO ADMIT THAT WE ARE AN ATYPICAL COMPANY, HAVING ORIGINATED AS A SATELLITE OFFICE OF A COMPANY WITH HEADQUARTERS ON THE SPIRIT LAKE DAKOTA NATION. Buffalo a mile from our original

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We spun off as an independent company in 2008. In twenty years we have probably spent thirty minutes on search engine optimization and our website is revised annually whether it needs it or not. We choose our clients as carefully as they choose us, and it invariably turns out to be a long-term relationship. If you’ve found this site, it’s doubtful you stumbled across it. More likely, you were referred to us by one of our clients or heard about us through our work. If you think we should work together, please send us an email or give us a call. BIGGER ISN’T ALWAYS BETTER. BETTER IS ALWAYS BETTER. The Julia Group maintains a commitment to our vision of sustainable growth, of adding employees only for the long-term and taking no more business than we can complete with an exceptional level of quality. We try to make life better, for our clients, employees and contractors. _Teaching your kids at home? You can download free games for grades

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