survey design

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    Simple survey analysis questions

    Hello all, I've been asked to assist with the statistical analysis of some survey data, and I'm a bit of a novice with this type of analysis, so I'm hoping that some with more experience can give me a bit of guidance. The investigators are interested in assessing the effectiveness of 6...
  2. P

    Random survey for crowd-sourcing similarities

    Hi all I have a data set of around 5,000 items that I need to test how similar or dissimilar people see each item as being from each other. In theory, the items should be able to be grouped up into major and minor groupings, providing the basis for a dendrogram structure. To do this, I'm...
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    Survey Design Help

    Hi Everyone, I am having a lot of trouble figuring out the runs for a 2*3 4*4 survey design. From the following site, it is orthogonal at 16 runs, so I don't think I am trying to do something impossible. http://neilsloane.com/doc/cent4.html But for the life of me I can't...
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    Asking causal questions directly vs measuring variables in a survey

    Hi all, is it okay to ask causal questions like "Does A cause B?" directly as survey questions instead of asking question that measure A and B separately and then analyzing the correlation/causation between them? To explain: I have several hypotheses that look like "A causes B", say...
  5. A

    Fitting log-linear models to survey data with cluster variance corrections.

    Dear folks-- This is not exactly a psych question, but I thought this was the forum wher I would find the most knowledge about log-linear models. If i shold relocate the question, please let me know. If you have catagorical count data from a large survey, with reported varience estimates fo...
  6. M

    Survey Design

    Dear All, I would like to design a big survey. The population is around 70 million which is the whole country. The purpose of the design is to ask questions about politics, abortions ... 1)How many people I need to choose? 2)How can I design it so that the sample represents the whole...