All Questions
Tagged with wilcoxon-signed-rank regression
10
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investigation of a potential change of measured values: only the simple linear regression or also compare the mean of follow-up values with baseline?
For my medical dissertation I am studying a group of 36 patients. The patients received a drug repeatedly over several months. Serum levels of two cytokines were measured in the patients both before ...
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56
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690
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Distribution of Residuals and Response - When to use which?
I would like to analysze the relation between my continuous response 'soil moisture content [%]' and 2 categorical and 1 continuous predictors.
I fit a linear mixed model and checked the distribution ...
- 93
2
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2
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493
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Analysis of ordinal patient data across 3 time points (ordinal regression vs. Wilcoxin rank sum)?
I am conducting a study of a number of patients with a disease, and using an ordinal scale assessment of functional status at 3 different time points.
In this example we can say that I have 100 ...
- 23
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Paired wilcoxon vs linear mixed effects model with random intercept - the 2 interpretations
I would like to know what would be the key differentiator assessing change over time between a wilcoxon paired test and a linear mixed effect model with random intercept.
I did my analysis in R:
The ...
- 220
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434
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Hypothesis testing with regression models
I have two regression models: a linear model with one variable, and a neural network with many. I want to test whether the neural network is better than the linear model.
I am wondering the best way ...
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62
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What test should I use?
I have a set of n objects being tested for characteristics c1 and c2. Using a two-output classifier, I obtain rankings R1 and R2 for each of my objects, which represent its likelihood of c1 or c2. Are ...
- 235
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When comparing groups -significantly different. Logistic regression-Low predictability Why?
I am asking more of a theoretical question, I think. I'm doing some testing on two groups Group A (sample size 500) /Group B (sample Size 500) that are continuous ratio. They are both skewed ...
- 123
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How to calculate statistical power of Wilcoxon signed-rank test in R?
I have two paired samples following normal distributions N(0, $\sigma_1^2$) and N(0, $\sigma_2^2$). Samples represent estimation errors (residuals) of two linear regression models used to predict the ...
- 123
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Comparing ranks within groups
I've got data from a psychology research study where participants are given scores for various different situations.
I'm looking at comparing the rank of those scores - is the person ranked as 1st in ...
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