Useful tips for everyday
How are multiple comparisons with repeated measures different? However, the arithmetic is no different is we compare (Mean1 + Mean2 + Mean3)/3 with (Mean4 +…
What is precomputed kernel in SVM? The kernel function takes two vectors and gives a scalar, so you can think of a precomputed kernel as…
Which is an example of a multilevel model? A next decision in specifying a multilevel model is whether the explanatory variables considered in a particular…
What is a search approach? A search strategy is an organised structure of key terms used to search a database. The search strategy combines the…
How is the mean of an exponential distribution parametrized? The exponential distribution is sometimes parametrized in terms of the scale parameter β = 1/λ :…
How do I stop fake survey responses? Prevention strategies have been recommended — such as providing a link to allow respondents, if they want, to…
What does Wald test tell us? The Wald test can tell you which model variables are contributing something significant. The Wald test (also called the…
Can a control variable be a moderator? Moderator variables are those variables which act like a catalyst in a regression relationship. Control variables are those…
Which is better a bootstrap or a cross validation? In general the bootstrap requires fewer model fits (often around 300) than cross-validation (10-fold cross-validation should…
How do you explain regression to the mean? Regression to the mean is all about how data evens out. It basically states that if a…