Useful tips for everyday
What is a two group pretest posttest design? A two-group pretest–posttest design is an experimental design, which compares the change that occurs within two different…
How do you assess heterogeneity in a meta-analysis? The classical measure of heterogeneity is Cochran’s Q, which is calculated as the weighted sum of squared…
How do you reduce untruthful responses? Here are some good tips for reducing response bias: Ask neutrally worded questions. Make sure your answer options are…
Is there a limit to the number of possible likelihoods? There is no limit to the hypotheses one might entertain. The set of hypotheses to…
What is C-statistic in logistic regression? What is a C-Statistic? The concordance statistic is equal to the area under a ROC curve. The C-statistic (sometimes…
How does neural network optimize Hyperparameters? Step 1 — Deciding on the network topology (not really considered optimization but is obviously very important) Step 2…
How do you find standard deviation in regression? STDEV. S(errors) = (SQRT(1 minus R-squared)) x STDEV. S(Y). So, if you know the standard deviation of…
What is the range of 95 confidence interval? 88 – (1.96 x 0.53) = 86.96 mmHg. This is called the 95% confidence interval , and…
How are the coefficients of a Cox regression related? The coefficients in a Cox regression relate to hazard; a positive coefficient indicates a worse prognosis…
Is Poisson distribution exponential family? The normal, exponential, log-normal, gamma, chi-squared, beta, Dirichlet, Bernoulli, categorical, Poisson, geometric, inverse Gaussian, von Mises and von Mises-Fisher distributions…