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  • 1.  Paired t test but the data is in frequencies

    Posted Mon March 07, 2022 10:30 AM
    Hi all,
    I am new to SPSS and I am using it to analyze my data for my master's thesis.

    I want to compare frequencies of coffee consumption before and after an event (something like a paired t-test but the data is in frequencies) but I don´t know what type of test I got to use. 

    Could you please help me with that?

    Thanks a lot
    Reza


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    Reza Sedighi
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    #SPSSStatistics


  • 2.  RE: Paired t test but the data is in frequencies

    Posted Mon March 07, 2022 11:19 AM
    Honestly, if you have the data already aggregated into means and standard deviations, it would be much simpler and faster for you to use a simple desktop calculator or an online one designed for paired t's with aggregated data, like this.

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    Rick Marcantonio
    Quality Assurance
    IBM
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    Original Message


  • 3.  RE: Paired t test but the data is in frequencies

    Posted Mon March 07, 2022 11:38 AM
    If I misunderstood and you want to compare proportions, look at the Analyze menu:

    Analyze > Means > Paired-Samples Proportions

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    Rick Marcantonio
    Quality Assurance
    IBM
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    Original Message


  • 4.  RE: Paired t test but the data is in frequencies

    Posted Mon March 07, 2022 03:58 PM
    Hi Rick,
    Thank a lot for your answer. 
    I just found a solution that lets me compare paired frequencies. It´s called Mc Nemar Chi-Square Test. In SPSS, the process is almost the same as testing chi-square, you just need to select McNemar in options before running the test.
    This was how I could manage but I believe there are also other ways of doing it.
    Thanks again
    Reza


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    Reza Sedighi
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    Original Message


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