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survey

Recoding a Variable from a Survey Question to Use in a Statistical Model

by Jeff Meyer Leave a Comment

Survey questions are often structured without regard for ease of use within a statistical model.

Take for example a survey done by the Centers for Disease Control (CDC) regarding child births in the U.S. One of the variables in the data set is “interval since last pregnancy”. Here is a histogram of the results.

[Read more…] about Recoding a Variable from a Survey Question to Use in a Statistical Model

Tagged With: categorical predictor, continuous predictor, predictor variable, recode, survey, survey questions

Related Posts

  • A Strategy for Converting a Continuous to a Categorical Predictor
  • A Useful Graph for Interpreting Interactions between Continuous Variables
  • Should I Specify a Model Predictor as Categorical or Continuous?
  • The Impact of Removing the Constant from a Regression Model: The Categorical Case

Member Training: (Just About) Everything You Need To Know Before Starting a Survey

by guest Leave a Comment

This webinar, presented by Yasamin Miller, will cover broadly survey design and planning.

It will outline the advantages and disadvantages of the various data collection modes, types of samples available to target your population, how to obtain a representative sample, and how to avoid the pitfalls of bad questionnaire design.


Note: This training is an exclusive benefit to members of the Statistically Speaking Membership Program and part of the Stat’s Amore Trainings Series. Each Stat’s Amore Training is approximately 90 minutes long.

[Read more…] about Member Training: (Just About) Everything You Need To Know Before Starting a Survey

Tagged With: data collection, design, population, questionnaire, representative sample, samples, survey, survey planning, target

Related Posts

  • September Member Training: Inference and p-values and Statistical Significance, Oh My!
  • Member Training: Data Cleaning
  • Member Training: Seven Fundamental Tests for Categorical Data
  • Member Training: Practical Suggestions for Improving Your Scatterplots

Target Population and Sampling Frame in Survey Sampling

by guest 6 Comments

Author: Trent Buskirk, PhD.

As it is in history, literature, criminology and many other areas, context is important in statistics.  Knowing from where your data comes gives clues about what you can do with that data and what inferences you can make from it. 

In survey samples context is critical because it informs you about how the sample was selected and from what population it was selected.   [Read more…] about Target Population and Sampling Frame in Survey Sampling

Tagged With: Complex Survey, sampling, sampling frame, simple random sample, survey, target population

Related Posts

  • Sampling Error in Surveys
  • Member Training: A Quick Introduction to Weighting in Complex Samples
  • Outliers and Their Origins
  • What is a Complex Sample Part 2: What is it and Why Would You Ever Want to Use One?

Sampling Error in Surveys

by guest Leave a Comment

Author: Trent Buskirk, PhD.

What do you do when you hear the word error?  Do you think you made a mistake? 

Well in survey statistics, error could imply that things are as they should be.  That might be the best news yet–error could mean that things are as they should be.

Let’s break this down a bit more before you think this might be a typo or even worse, an error. [Read more…] about Sampling Error in Surveys

Tagged With: complex sampling, margin of error, sampling error, simple random sample, survey

Related Posts

  • Target Population and Sampling Frame in Survey Sampling
  • What is Complex Sampling? Part 4: Cluster Sampling
  • What is a Complex Sample? Part 1: Simple Random Samples
  • Member Training: Complex Survey Sampling – An Overview

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