Questions tagged [non-normal-data]
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6 questions
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How to calculate conditional power for data that is NOT normally distributed?
Study information:
Two pararell arms, active group and Placebo group. The planned sample size is 168 = 84*2. Since our primary endpoint is not normally distributed (known from other previous similar ...
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Problem finding a distribution for my data (glmm)
I want to do a correlation analysis of two variables ranging from zero to one (including those values), and including other possible environmental explanatory variables.
I opted for a mixed model, ...
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Wilcoxon signed-rank test always finding randomly generated ratios to be different from unity?
I need to test if a group of ratios from an experiment (calculated as condition1/condition2 from paired samples) is significantly different from one. All measures in the experiment are positive, real ...
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Appropriate test for RNA binding data
I have the data on RNA binding by a protein. The dependent variable is the fraction of bound RNA, and the independent variable is protein concentration. I have such data for one reference RNA and 8 ...
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Second order statistics of sample statistics for random vectors
Good morning.
I have a set of iid random vectors $\{\boldsymbol{X}^i\}_{i=1}^N$, whose expected value is $\mathbb{E}[\boldsymbol{X}^i] = \boldsymbol{\mu}$ and whose variance - covariance matrix is $\...
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How to do a power analysis on density (count/area) data?
I would like to calculate the power to detect a hypothetical x% decrease from a mean value, but have a few qualifying questions. The data are strictly positive, right-skewed, continuous data ...
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