Useful tips for everyday
What is the difference between interaction and confounding? A confounding variable is a factor associated with both the exposure of interest and the outcome of…
What if I accept my null hypothesis? Accepting the null hypothesis would indicate that you’ve proven an effect doesn’t exist. As you’ve seen, that’s not…
What assumptions are made for confidence interval? The confidence interval of the mean of a measurement variable is commonly estimated on the assumption that the…
Why are composite outcomes used? Why use composite outcomes in clinical trials? The main advantage of this approach is increased statistical efficiency. By measuring more…
What is a good sample size for research? A good maximum sample size is usually 10% as long as it does not exceed 1000. A…
How do you display ranked data? The simplest way to show ranking data is through a column or bar chart, ordered by frequency from greatest…
Is standard error a covariance? 1 Answer. Yes, the diagonal elements of the covariance matrix are the variances. The square root of these variances are…
How do you find the point estimate of a proportion? Formula Review. p′ = x / n where x represents the number of successes and…
What are the assumptions in the causalimpact package? The CausalImpact package, in particular, assumes that the outcome time series can be explained in terms of…
Which is the best way to extend Gibbs sampling? It is also possible to extend Gibbs sampling in various ways. For example, in the case…