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Results tagged with hypothesis-testing
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user 107799
Hypothesis testing assesses whether data are inconsistent with a given hypothesis (usually a null hypothesis of no effect).
4
votes
Appropriateness of one-sided hypothesis tests when testing medical treatments
A one-sided confidence interval (CI)/test is as good as a two-sided CI/test: it all depends on your assumptions and goals. Given what you are telling us, ie that the prior knowledge is very limited (' …
- 2,622
1
vote
Collecting and analysing data in RCT
Given that randomized allocation ensures theoretical equipoise, you correctly chose a test not encompassing adjustment for confounders. However, if you are facing repeated measures (eg blood test resu …
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2
votes
0
answers
51
views
When is the chi-squared test becoming virtually identical to a Fisher exact test?
I am conducting several hypothesis tests for caterorical variables, with several groups being compared.
I routinely use the Fisher exact test in Stata, but occasionally it may get time consuming and …
- 2,622
7
votes
2
answers
875
views
Is the frequentist framework more appropriate than the Bayesian one, according to Popper's t...
According to Karl Popper, only falsifiable hypotheses are truly scientific (quoting Wikipedia):
no number of positive outcomes at the level of experimental testing
can confirm a scientific theo …
- 2,622
17
votes
Is this the solution to the p-value problem?
This fine adjunct to the p-value debate, interesting but also somewhat stale in my opinion, reminds me of a unique paper published some years ago in the Christmas issue of the British Medical Journal …
0
votes
Using statistical significance test to validate cluster analysis results
Instead of hypothesis testing with a given test, I would recommend bootstrapping means or other summary estimates between clusters. For instance you could rely on percentile bootstrap with at least 10 …
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2
votes
ASA discusses limitations of $p$-values - what are the alternatives?
My choice would be to continue using p values, but simply adding confidence/credible intervals, and possibly for the primary outcomes prediction intervals. There is a very nice book by Douglas Altman …
- 2,622
1
vote
Statistical significance, repeatability, and sample size (50 shades of grey)
You pose several important questions, some focusing on hypothesis testing, some on multiplicity, and so forth. These are my answers:
The typical approach is to repeat the experiment analyzing every …
- 2,622
34
votes
8
answers
4k
views
Should I teach Bayesian or frequentist statistics first?
I am helping my boys, currently in high school, understanding statistics, and I am considering beginning with some simple examples without disregarding some glimpses to theory.
My goal would be to g …
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