Useful tips for everyday
What happens to the width of a confidence interval as the confidence level decreases? As we decrease the confidence level, the t-multiplier decreases, and hence…
How to calculate linear regression for 100 3-dimensional points? I need to create a program to calculate linear regression for 100 3-dimensional points. I also…
Why do we do data balancing? One of the rules in machine learning is, its important to balance out the data set or at least…
Which is an example of a discrete random variable? Discrete random variables take finitely many or countably infinitely many values. The number of rainy days…
How do you interpret the p value for Kolmogorov-Smirnov? The p-value returned by the k-s test has the same interpretation as other p-values. You reject…
When working with panel data we should generally use clustered standard errors? Clustered standard errors are for accounting for situations where observations WITHIN each group…
Does test statistic provide null hypothesis evidence? Once we have our test statistic, we can calculate a P-value—the probability of observing a value for a…
What bimodal means? two modes Bimodal literally means “two modes” and is typically used to describe distributions of values that have two centers. For example,…
How do you calculate ICC in a mixed model? The ICC is calculated by dividing the between-group-variance (random intercept variance) by the total variance (i.e.…
Can you prove that 2 samples come from the same population? We can never prove the null to be true, just reject it, so these…