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Results tagged with proportion
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user 238499
A proportion is the fraction of some total that is of a particular kind, either (i) as a count of one type of thing out of a total count, or (ii) as a component of a continuous variable.
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Can I use a t-test for proportional data?
There are specific tests for comparing proportions between two groups! Let us take a random sample of $m$ observations from group A and $n$ observations from group B.
Let $\hat{a}$ be the observed p …
- 2,665
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Checking for plagiarism with a proportion test
In order to determine whether 18% is too big or not, it would be needed to have a precise definition of how that index is calculated. Fortunatelly, we have a calculator that does it for us, but I don' …
- 2,665
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How to calculate the error of percentages
However, if what you're dealing with is a proportion (as in "73% of students passed the test, ie: a value between 0% and 100%), then you should calculate standard deviation from the binomial distribution … , in other words, for a population of n and a proportion of p (measured from 0 to 1), your variance is np(1-p), and your standard deviation is the square root of that number …
- 2,665
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Comparing proportions of two samples in time
So, the straight-forward approach would be to perform a proportion comparison test. … Let $r$ be the overall proportion (when considering both groups together). …
- 2,665