# All Questions

135,193 questions
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### Probability Plot for Ordinal Logistic Regression on SPSS

I would like to draw a plot of my predictor variable (continuous) vs. the probability of my outcome variable (4 ordinal levels) on SPSS. I have run the simple, usual PLUM model but there is no direct ...
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### Nonparametric Sign Test

Given Likert scale survey responses: ...
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### R - multivariate glm, what to use as a p-value and odds ratio?

This is for a case-control study. I need to get a p-value and an odds ratio with confidence intervals from my glm, but I'm unsure of the best approach. I have the <...
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### Changes in significance and effect size (though constant SEs) when controlling for a categorical variable. Correlation test & interpretation?

I am interested in the effect of the extend to which an occupation consists of routine codifiable tasks and individual job displacement. I have individual level survey data and use a logit model to ...
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### t-test/regression - how to account for random effects?

I need your help on how best to test the following hypotheses in R. Each observation in my data has RaterID and RaterGender, ...
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### Confusion matrix in clustering

Normally, the confusion matrix is associated with the classification since the actual class labels are known ahead for each data item. But, when you try to externally evaluate the clustering results, ...
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### Help needed making Random Permutations in R studio [migrated]

I am very new to R and struggling a bit with getting my head around things. I need to make random permutations out of my data set, I have 5 categories (these are age classes) 10, 16, 21, 26, 36. ...
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### Using a generalised linear model for tennis winning probability

I have a dataset of historical tennis matches, one row per match. Each row has the ELO points of each player, and a calculated ELO difference. And of course a column to indicate if Player 1 won as a 1 ...
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### Real Time machine learning

I am interested in finding how you would do real-time machine learning(in this case it would be applied to a car but it could be anything). Basically I want to categorize an image, take action based ...
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### add constraints to random forest

I've got a 200 points dataset with the following features two Atomic elements: Pt, Cu, Pt..../ B/C/D/E and I want to use them to predict X. I want to study the importance of the atomic elements the ...