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Results tagged with t-test
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user 1818
A test for comparing the means of two samples, or the mean of one sample (or even parameter estimates) with a specified value; also known as the "Student t-test" after the pseudonym of its inventor.
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T-test: is the difference of the means in my sample's two subgroups equal to a given differe...
I've recently reread the section about t-test, comparing means in two independent subgroups and know the formula, how to compute the t-coefficient.
Now I'm facing the question, whether the difference …
- 1,664
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2
answers
137
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What is the required test if I want to see, whether the means of a variable X for men and wo...
My first intuition was to use a t-test, but after looking in my memories and then in wikipedia I could not discern a conclusive answer...
In my course I want to talk about the rationale of the …
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Test which test to use: (Student-) T-test or (Mann-whitney) U-test
I've seen a couple of questions here around this alternative, but a -very basic- specific question I cannot answer from the top of my mind.
Having a metric measure $M$ taken before treatize and after …
- 1,664
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answer
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$2$-step (paired) t-test - or what?
Today I was asked about the following variant of a testing-question, and the proposal by the asker was a modification of a t-test, but I'm not sure about this.
The situation is as follows:
there is a …
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27
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Treatment: Mean AND variance should be optimized. What test to use/how to use (for instance ...
Assume a research on the effect of applying a treatment to improve health by normalizing level of some vitamins in the bodies of some people. We measure initially the level of the vitamin of sick peop …
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3
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453
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Significance test of whether participants have more friends of the same sex
I've run into a simple problem - but no idea how to access it correctly.
I've 85 people asked concerning their social network; first example: how many friends do you have. Second, what gender is each …
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