Useful tips for everyday
What statistic is used to check the significance of the Kruskal-Wallis test? The test determines whether the medians of two or more groups are different.…
How is the likelihood ratio test statistic calculated? Now that we have both log likelihoods, calculating the test statistic is simple: So our likelihood ratio…
What is an unpaired sample t-test? An unpaired t-test (also known as an independent t-test) is a statistical procedure that compares the averages/means of two…
How does fertility rate affect population growth? As fertility declines, the proportion of children in the population falls and the proportion of the population of…
What is Dirichlet process mixture model? The Dirichlet process is a stochastic proces used in Bayesian nonparametric models of data, particularly in Dirichlet process mixture…
Why is there no multicollinearity in linear regression? Multicollinearity reduces the precision of the estimated coefficients, which weakens the statistical power of your regression model.…
Why the chi-square Cannot be less than or equal to 1? The Chi-square random variable by definition is a positive valued variable. It can be…
Is ETA squared biased? The drawback for Eta Squared is that it is a biased measure of population variance explained (although it is accurate for…
When did Bayesian inference via MCMC become popular? Baysian inference via MCMC was the bandwagon of the nineties in statistics. It usage exploded after 1990…
Is mutation testing widely used? Mutation Testing has been increasingly and widely studied since it was first proposed in the 1970s. There has been much…