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  • How to resolve the ambiguity in the Boy or Girl paradox?
    The net effect is that even if I don't know which one is definitely a boy, the other child can only be a girl or a boy and that is always and only a 1 2 probability (ignoring any biological weighting that girls may represent 51% of births or whatever the reality is)
  • probability - What is the expected number of children until having the . . .
    You can consider starting from position 1 for the difference of boys girls and move up and down randomly with 50% probability until reaching zero These type of walks have been described here: What is the distribution of time's to ruin in the gambler's ruin problem (random walk)? and based on the results in those answers we can see that the
  • Hypothesis testing: Fishers exact test and Binomial test
    The result obtained with the Fisher's exact test ("no significant difference between the proportion of girls and boys who finds that the cake tastes good") seems to contradict the results in (1) and (2), which say that the "more than 50% of the population of girls find that the cake tastes good" (1), and "no more than 50% of boys find that the
  • what is the difference between a two-sample t-test and a paired t-test
    While I was glancing at hypothesis tests, I saw paired and two-sample t-test but couldn't understand the difference For the explanation of these two tests, I saw the following sentence quot; Two-
  • Why is gender typically coded 0 1 rather than 1 2, for example?
    $\begingroup$ Using a 0 1 coding scheme is essentially useful when applying regression models among others, although several coding schemes are possible, e g -1 1 (but it will change the interpretation of the regression coefficients)
  • r - What test can I use to compare slopes from two or more regression . . .
    Stack Exchange Network Stack Exchange network consists of 183 Q A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers
  • should I use log or raw data in non parametric tests?
    If you only compare girls vs boys, Kruskall-Wallis test and Wilcoxon test should be equivalent But anyway, as for the Wilcoxon test, the Kruskall-Wallis test is not affected by log-transform, as explained by stats_model $\endgroup$ –
  • How to measure the shift between two cumulative distribution functions . . .
    $\begingroup$ Orthogonal comments, picky if you like, but in graphics details can matter a lot 1 Difficulty distinguishing red and green is a common problem many people have; here it doesn't matter because the two curves would be distinct whatever the colours, but even for this kind of problem, red and green curves that crossed could be a puzzle





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