34 questions linked to/from t-test on highly skewed data
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### T-test or Mann-Whitney U test [duplicate]

Given the central limit theorem, can you always use a t-test to test a difference between two groups even if the data are not normally distributed but the sample size is large enough? Stated in ...
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### Can we ALWAYS assume normal distribution if n >30?

I'm in a debate with a coworker and I'm starting to wonder if I'm wrong but the internet is confusing me more. We have continuous data [0,infinity) that is retrospectively selected on individuals. The ...
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### Big sample size (n>50.000), but still highly skewed. Is central limit theorem still valid?

I have 12 samples with approx. 50.000 data points each. I got it from a content analysis of Reddit comments. The data is generated by analyzing the comments with LIWC tool and it gives me information ...
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### Statistic on non-normalized data

Not that strong in statistics, so I need a little help getting started with some data I've gathered. In my experiment subjects had to perform tasks while I took time for them to complete it. Now, I ...