analysis_s09 - Introduction to Survey Introduction Data...

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1 Introduction to Survey Introduction to Survey Data Analysis Data Analysis Linda K. Owens, PhD Survey Research Laboratory University of Illinois at Chicago
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2 Survey Research Laboratory Data cleaning/missing data Sampling bias reduction   Focus of the seminar Focus of the seminar
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3 Survey Research Laboratory When analyzing survey data. .. When analyzing survey data. .. design  2. Screen the data  3. Adjust for sampling design  
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4 Survey Research Laboratory 1. 1. Conductor of survey  Sponsor of survey Measured variables    Unit of analysis Mode of data collection Dates of data collection  
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5 Survey Research Laboratory Geographic coverage Respondent eligibility criteria Sample design 1. 1. Understand & evaluate survey
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6 Survey Research Laboratory Nominal Ordinal Interval Ratio Levels of measurement Levels of measurement
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7 Survey Research Laboratory Examine raw frequency distributions  for…   (a)  out-of-range values (outliers) (b)  missing values 2. Data screening 2. Data screening
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8 Survey Research Laboratory Out-of-range values:   Delete data Recode values 2. Data screening 2. Data screening
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9 Survey Research Laboratory can reduce effective sample size may introduce bias Missing data: Missing data:
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Survey Research Laboratory Refusals (question sensitivity) Don’t know responses (cognitive problems,  memory problems) Not applicable Data processing errors Questionnaire programming errors
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This note was uploaded on 06/11/2010 for the course SOC 481 taught by Professor Burris during the Summer '09 term at University of Illinois at Urbana–Champaign.

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analysis_s09 - Introduction to Survey Introduction Data...

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