14_nonresponse

14_nonresponse - Nonresponse and Weight Adjustments Lecture...

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Unformatted text preview: Nonresponse and Weight Adjustments Lecture 14 STAT 651: Survey Sampling Methods, Kaizar p.1/32 Lecture 14: Nonresponse and Weight Adjustments Reading: Lohr Chapter 8 Types of Nonresponse Approaches for Nonresponse Prevent it Ignore it Adjust for it Weight Class Adjustment Imputation Modeling STAT 651: Survey Sampling Methods, Kaizar p.2/32 Types of Nonresponse Motivating Example: Telephone Survey Unit nonresponse Item nonresponse STAT 651: Survey Sampling Methods, Kaizar p.3/32 Reporting Nonresponse American Association of Public Opinion Resources (AAPOR) publishes guidelines. Response Rate Cooperation Rate Refusal Rate Contact Rate Weighted versions of these are available for complex surveys. STAT 651: Survey Sampling Methods, Kaizar p.4/32 What to Do? Prevent it Ignore it Adjust for it STAT 651: Survey Sampling Methods, Kaizar p.5/32 Prevention Unit nonresponse Item nonresponse STAT 651: Survey Sampling Methods, Kaizar p.6/32 Ignoring Nonresponse Delete any item that has nonresponse. Note that most software packages do this automatically! STAT 651: Survey Sampling Methods, Kaizar p.7/32 Toy Example, SRS, N=1000 Survey of new statistics PhDs. id female academic salary 1 1 1 67.40 2 1 1 74.80 3 4 1 1 83.80 5 1 76.50 6 7 90.00 8 9 10 89.20 STAT 651: Survey Sampling Methods, Kaizar p.8/32 Toy Example, cont....
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14_nonresponse - Nonresponse and Weight Adjustments Lecture...

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