anonymous
  • anonymous
use of chi square
The Normal Distribution
schrodinger
  • schrodinger
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poopsiedoodle
  • poopsiedoodle
wat
anonymous
  • anonymous
You mean a chi-squared distribution? It's widespread use in almost anything relating to hypothesis testing (e.g. confidence intervals, statistical inference, et al).
blues
  • blues
It is widely used in inference and hypothesis testing to analyse associations. In categorical factors. Like is a factor like smoking (maybe in a non-smoking control group, a 1 pack a day group and a 2 pack a day group) associated with some outcome like increases in number of deaths from lung cancer or associated with more aggressive forms of lung cancer? You would use a chi square procedure to construct a confidence interval or run a hypothesis test or whatever to determine whether or not cigarette smoking is associated with bad outcomes.

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