Useful tips for everyday
What does it mean when regression lines intersect? When the regression lines intersect each other at the point of means of X and Y, and…
Is BMI a quantitative data? Body Mass Index (or BMI) BMI in this case is a measurement and thus would be quantitative. Sometimes, BMI is…
When can you use the normal distribution to approximate the Poisson distribution? The Poisson(λ) Distribution can be approximated with Normal when λ is large. For…
What is the difference between Poisson and negative binomial distribution? The negative binomial distribution has one parameter more than the Poisson regression that adjusts the…
Which is the best predictor of temporal trends? It turns out that including time (centered around 1950), month (as a factor), and PDO (Pacific Decadal…
When to use ordinal or hot encoding for categorical variables? For categorical variables, it imposes an ordinal relationship where no such relationship may exist. This…
What does a low p-value mean in multiple regression? A low p-value (< 0.05) indicates that you can reject the null hypothesis. In other words,…
What are meta-analysis models? There are three categories of statistical models for meta-analysis: the fixed effects model, random effects model, and mixed effects models (Hedges…
What is the difference between Arima and ARMA model? The “I” in the ARIMA model stands for integrated; It is a measure of how many…
What is information in information paradox? The black hole information paradox tells us something important about the way quantum mechanics and gravity fit together. Hawking’s…