JSM 2011 Online Program

The views expressed here are those of the individual authors and not necessarily those of the JSM sponsors, their officers, or their staff.

Abstract Details

Activity Number: 612
Type: Topic Contributed
Date/Time: Thursday, August 4, 2011 : 8:30 AM to 10:20 AM
Sponsor: ENAR
Abstract - #300919
Title: Using the DAG Jackknife to Measure the Variance of an Estimator in the Presence of Item Nonresponse
Author(s): Darcy Miller*+ and Phil Kott
Companies: National Agricultural Statistics Service and RTI International
Address: 3251 Old Lee Highway, Fairfax, VA, 20002,
Keywords: Imputation ; Jackknife ; Item Nonresponse ; Variance Estimation

The National Agricultural Statistics Service (NASS) uses the delete-a-group (DAG) jackknife to estimate variances and mean squared errors in many of its surveys, including the Agricultural Resource Management Survey (ARMS). The DAG jackknife provides nearly unbiased estimates under a host of complex designs and processes. It involves breaking the sample of unit respondents into T (T= 15 or 30) groups and then sequentially deleting each group from the sample, leaving T replicate groups. Then T sets of replicate weights are created, and T replicate estimates are calculated using these weights. The DAG jackknife estimator is the sum of the squared differences between the T replicate estimates and the original estimate (entire sample) multiplied by (T-1)/T. Although the DAG jackknife currently accounts for unit nonresponse, item imputations are treated as real reported values. We explore usi

The address information is for the authors that have a + after their name.
Authors who are presenting talks have a * after their name.

Back to the full JSM 2011 program

2011 JSM Online Program Home

For information, contact jsm@amstat.org or phone (888) 231-3473.

If you have questions about the Continuing Education program, please contact the Education Department.