STAT 522 Adv App Survey Smpl Iowa State

Stat 522, spring of 2006, Homework 3 solutions, M. Larsen 1. Tables a. Lohrs problem 5, page 342, chapter 10, using the data provided. i. Multinomial sampling, X^2 = 69, p-value <.01, reject Null hypothesis of homogeneity of proportions ii. Table wit

Solutions for Stat 522 Homework 4, Spring of 2006 1. Calibration estimation was described on February 21 and 23 in class. See those notes and the Deville and Sarndal 1992 article for details. http:/www.public.iastate.edu/~larsen/stat522/readings/read

Statistics 522, Homework 6, due Thursday, April 27, 2006. 1. Do the following TWO problems. (a) SSW problem 15.1 (page 595). See section 15.3 for definitions of measures of response rates. Note: Unit nonresponse ocurs when P85 and RMT85 are both mis

NHANES and oversampling 2-14-06 Stat 522, M. Larsen NHANES background National Health and Nutrition Examination Survey CDC NCHS http:/www.cdc.gov/nchs/nhanes.htm http:/www.cdc.gov/nchs/about/major/nhanes/nhan es2003-2004/nhanes03_04.htm 40 years (di

nri03wet <- matrix(nrow=11, ncol=14) dimnames(nri03wet) <- list( c(\"Lake States\",\"Southest\",\"Delta States\",\"Northeast\", \"Northern Plains\",\"Appalachian\",\"Southern Plains\",\"Mountain\", \"Corn Belt\",\"Pacific\",\"Total\"), c(\"Crop-Pasture-CRP\",\"p1\",\"

hw1.out <- matrix(nrow=1000, ncol=7) dimnames(hw1.out) <- list(1:1000,c(\"Total\", \"HT\",\"HT.SE\",\"HT.Cover\",\"RA\",\"RA.SE\",\"RA.Cover\") for(it in 1:1000) { x <- (1:100)/100 y <- 5*x + rnorm(100,0,1) z <- x + rnorm(100,0,1/4) pi.z <- 10*z/su

Commands and output for HW 3 problem on calibration Stat 522 Fall 2007 = # remove all previous objects (make sure you have saved anything # you really want to keep! save.image() is default # create a new RData object to store all the results > rm

Tips and Tricks for Raking Survey Data (a.k.a. Sample Balancing) July 21, 2004 Michael P. Battaglia, David Izrael, David C. Hoaglin, and Martin R. Frankel Abt Associates, 55 Wheeler Street, Cambridge, MA 02138 1. Introduction A survey sample may cov