Useful tips for everyday
How to find the asymptotic variance of an estimator? Then the asymptotic variance is defined as 1 nI(θ0 ∣ n = 1) for large enough…
When does coverage probability equal the confidence interval? If all assumptions used in deriving a confidence interval are met, the nominal coverage probability will equal…
Is the standard error of the median greater or less than the standard error of the mean? The standard error of the median for large…
What are the basic concepts of predictive modeling? Predictive modeling is the process of using known results to create, process, and validate a model that…
What is the R-Squared in OLS method? R-squared (R2) is a statistical measure that represents the proportion of the variance for a dependent variable that’s…
What is mean independence assumption? The assumption of independence means that your data isn’t connected in any way (at least, in ways that you haven’t…
How does 5 fold cross validation work? What is K-Fold Cross Validation? K-Fold CV is where a given data set is split into a K…
How do you measure correlations? The correlation coefficient is measured on a scale that varies from + 1 through 0 to – 1. Complete correlation…
How do you test whether a data sample is normal or not? An informal approach to testing normality is to compare a histogram of the…
Can moment generating function be zero? As its name implies, the moment generating function can be used to compute a distribution’s moments: the nth moment…