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Interpretation of the output from qqPlot (using car library)

Basically, I have created a linear model and am testing to verify the normality of my errors. As a result, I have used the qqPlot function from the car library and have gotten the graph that can be ...
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How to find mixing ratios in a mixture model with known parameters?

This question does not ask for a formal solution or rephrasing, but for a practical implementation. That is why I am asking here and not on [cross-validate](https://clustering stats.stackexchange.com) ...
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How to find a probability distribution the parameters of which do not impact each other like mean and variance in normal distribution do?

I need to find a probability distribution to fit my data. My data has two important features, duration and activity count. Duration means how long one sequence lasts and activity count means the ...
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