A t-test is an inferential statistic used to determine if there is a significant difference between the means of two groups
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Questions tagged [t-test]
5 questions
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Which statistical procedure to use?
I'm new to Hypothesis testing. I can't really think of how to answer this -
Five students take a test one year and another test the next year. Their overall grades(in %) are given below for the test-1 and test-2. Which statistical procedure (e.g.…
a_jelly_fish
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Which statistical test is best to compare dichotomous variables?
You have an ML model that outputs 100,000 out of a million observations of a dichotomous variable 0 or 1. You want to see whether the distribution of the outputted 100,000 observations of the model is similar to the 1 mil. You apply the model 3…
IKNv99
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Which inferential test (t-test, F-Test orANOVA) is appropriate here?
I have some sample data of customers and I am looking at the impact of consistent advertising (e.g. showing the same message) to see the impact of click through rates per session.
The analysis shows an Uplift in click through where a consistent…
TheJammyHamster
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Degree of freedom. Two sampled test
According to this blog/article:
To calculate degrees of freedom for a 2-sample t-test, use N – 2 because there are now two parameters to estimate.
What parameters are they talking about? 2 means: for group 1 and mean for group 2? Or something…
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What is the difference between a test with assumption of standard normal distribution and t-test? And when to use each one?
I am studying statistics on my own and I am not understanding when to use a one-sample t-test or a test with assuming a standard normal distribution. As I understand, both are comparing a population mean with a sample mean, so, when should I use…
panchester
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