hw11 - Stat 511 Due 5pm Tuesday Apr 19 Homework 11...

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Stat 511 Homework 11 - corrected Spring 2011 Due: 5pm, Tuesday Apr 19 1. The data in school.txt come from an educational study. The full study has 3 treatments, but we will only look at data from one treatment. Treatments were randomly assigned to 8th grade classrooms in 3 schools in each of 4 school districts. Performance on a standardized test was measured for each student in each classroom. There are a total of 24 classrooms and 573 students. We will ignore the multiple levels of vairability and consider a model with a random effect for classroom and a random effect for student. Note that one of these random effects is commonly called “error”. (a) Estimate the variance components (variability between classrooms and variability among students within a classroom) using REML. (b) Estimate the mean score for this treatment and its standard error. (c) You have been asked by the teach of classroom 17 to report that class’s average perfor- mance on this exam. Report the appropriate value.
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This note was uploaded on 02/11/2012 for the course STAT 511 taught by Professor Staff during the Spring '08 term at Iowa State.

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hw11 - Stat 511 Due 5pm Tuesday Apr 19 Homework 11...

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