Welcome and Announcements
Nov.23: Office Hours on Wednesday, Nov 25 are cancelled. As always, feel free to email me to set up a convenient time for you to come by my office.
Nov.16: I have had an unforseen conflict this morning, and so I have moved my office hours to noon-1pm for today only. I appologize for any inconvenience. As always, feel free to email me to set up a more convenient time for you to come by my office.
Nov.12: I have added information about the appropriate transformation necessary for HW4, problem 4 to the last page of the assignment.
Nov.9: As many of you have noticed, the Jack-knife confidence intervals reported in jackstat are not correct. However, the standard error estimate is correct, as are the jackknife estimates in the jackdist file, and you can use either of these to find the correct confidence interval.
Nov.8: The file NAMCSplotimpute.sas has been updated to fix the problem with the estimate of the standard error in the stochastic regression imputation. Alternatively, you may use the "monotone reg" option of PROC MI to complete the stochastic regression imputation. These are not quite the same, and we will talk about how they differ in a few weeks in class.
Nov.5: I've posted some SAS code you might find helpful for problem 4 of the homework. I've also decided to reduce the computation time by requiring you to run the Jackknife only once (for the stochastic regression only). For those who missed the first announcement in class, problem 4 will take your computer a little while to complete. I suggest you start this early.
Nov.3: The revised imputation code in the computing section of the website had an error in the stochastic regression imputation. This is now fixed.
Nov.1: My regular office hours on Wednesday, Nov. 4 are moved to 9:30-10:30am.
Oct.29: Homework 3 is posed in the homework section. Question 1 is due a week from today, and the rest is due on Nov. 10. As we are running a little behind schedule, Exam 2 will likely be moved to Nov. 19.
Oct.29: Revised code for imputation (as discussed in class today) is posted in the computing section.
Oct.29: Impromptu Homework (writing code to evaluate imputation methods) is due on Monday, Nov. 2 at noon. The very start of the code that we worked on today in class is posed in the computing section.
Oct.29: Class on Tuesday, Nov. 3 will be held in Stillman Hall 235. This will be our last scheduled day in the lab for a while.
Oct.27: I just received confirmation of our reservation. Class on Thursday, Oct. 29 will be held in Stillman Hall 235 (just upstairs from the usual classroom).
Oct.22: Class on Tuesday, Oct. 27 will be held in Stillman Hall 235 (just upstairs from the usual classroom).
Oct.16: I have posted a review outline in the exams section of this website. It is ordered in an order slightly different from what we covered in class to focus more on what your thought process might be in practice. Exam 1 will focus on the material covered in homework -- including regression imputation -- but material up to and including substitution imputation is 'fair game'.
Oct.16: Solutions for Homeworks 1 and 2 are now posted online.
Oct.13: I've posted a modified version of HW2.
Oct.6: I've clarified the contents of the data sets for Homework 1, Question 2 in the homework section of the website.
Oct.1: Homework 1 has been posted to the homework section of the website. You should be able to make at least a good start on questions 1-4. The material for question 5 will be covered on Tuesday.
Oct.1: I have posted sas code for permanently saving formats in the "Computing" section of this website, in the file "PermanentFormats.sas". I won't be covering this in class. If you have questions about it, please let me know.
Oct.1: The room has become official: Stillman hall 131 on both Tuesdays and Thursdays. See you there.
Sept.2: As you may have noticed, there's been quite a bit of activity in our room assignment. We are currently in Hopkins Hall 354 on Tuesday mornings (this is a computer lab, so we can do some hands-on things Tuesdays) and in Stillman Hall 131 on Thursday mornings. All the class meetings are from 8:30-10:18am. Keep checking to be sure that you come to the right place--I'd hate to miss you.
Apr.22: Welcome to STAT 652! I'm looking forward to spending the quarter thinking about missing data with you. I will be using this site to post notes, homeworks and announcements, so check back often! I'll be using the Carmen system to maintain the gradebook for this course, as well as occasionally post restricted items. I'll let you know about these as we need them. To start, you can look at a tentative syllabus - there is a link to it in the "Course Information" section of this website. I'll be updating this closer to the start of the quarter.
Index