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Thread: Which stat? Difference of two means. T-test paired vs unpaired

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    Which stat? Difference of two means. T-test paired vs unpaired




    Hi guys. I'm trying to determine if the difference between two groups of data are statistically significant.

    Looking at mri, I am measure the volume of the left atrium using two different methods.
    I am using the same set of images for each of the two methods. I think they are independent samples as one measurement does not directly influence the other measurement, but I wonder if I'm thinking about this wrong. Or maybe I'm using the wrong test?

    Thanks guys.

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    Re: Which stat? Difference of two means. T-test paired vs unpaired

    If you just want to compare these two measurements, you are looking at paired data and may want to conduct the wilcoxon signed rank test. What is your sample size.

    However, are you treating either of these measures as a gold standard or just comparing them?
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    Re: Which stat? Difference of two means. T-test paired vs unpaired


    Hi. Thanks for the prompt reply. My sample size is 145. One data set is the reference data set.

    Thanks again

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