Useful tips for everyday
Under what conditions would you use the paired t-test? A paired t-test is used when we are interested in the difference between two variables for…
What is ith order statistics? “n” is statistical notation for the number of items in a sample. In other words, once you’ve placed your sample…
How do you find the absolute mean difference? The mean absolute difference (univariate) is a measure of statistical dispersion equal to the average absolute difference…
Do you need to normalize variables for linear regression? In regression analysis, you need to standardize the independent variables when your model contains polynomial terms…
Why is nonlinear transformations of variables used in regression analysis? A nonlinear transformation is used to increase the relationship between variables. The most effective transformation…
What are the conditions required for parametric test? As a general rule of thumb, when the dependent variable’s level of measurement is nominal (categorical) or…
How is linkage disequilibrium related to SNP? Linkage disequilibrium (LD) is the correlation between nearby variants such that the alleles at neighboring polymorphisms (observed on…
What is propensity score matching? Propensity score matching (PSM) is a quasi-experimental method in which the researcher uses statistical techniques to construct an artificial control…
Which is the best definition of maximum likelihood estimation? Maximum likelihood estimates. Definition. Let X 1, X 2, ⋯, X n be a random sample…
How is inverse probability weighting used in science? Inverse probability weighting relies on building a logistic regression model to estimate the probability of the exposure…