Useful tips for everyday
What is the joint probability distribution of X and Y? If X and Y are discrete random variables, the function given by f (x, y)…
How did gradient boosting machines get their name? The name gradient boosting machines come from the fact that this procedure can be generalized to loss…
Is Monty Hall a Bayesian problem? The Monty Hall problem is a famous, seemingly paradoxical problem in conditional probability and reasoning using Bayes’ theorem. Information…
Why do we subtract 1 in sample standard deviation? So why do we subtract 1 when using these formulas? The simple answer: the calculations for…
How to compare regression models using the same dependent variable? When comparing regression models that use the same dependent variable and the same estimation period,…
What does N mean in normal distribution? The standard normal distribution is N(0,1); i.e., the normal distribution with mean 0 and variance 1. Probabilities for…
How do you use dissimilarity matrix? The dissimilarity matrix, using the euclidean metric, can be calculated with the command: daisy(agriculture, metric = “euclidean”). The result…
Is it exogenous or endogenous? Exogenous comes from the Greek Exo, meaning “outside” and gignomai, meaning “to produce.” In contrast, an endogenous variable is one…
Is sample space another term for population? The term “population” as a noun should refer to the sample space, not the random variable as is…
How to perform a statistical analysis using SPSS? Statistical analyses using SPSS This page shows how to perform a number of statistical tests using SPSS.…