Useful tips for everyday
What is the difference between statistical dependency and causation? Causal relations are local, modular, and directed. They are modular in the sense that any two…
How do you explain power analysis? Power analysis is normally conducted before the data collection. The main purpose underlying power analysis is to help the…
What is log-likelihood of a model? Log Likelihood value is a measure of goodness of fit for any model. Higher the value, better is the…
What is imbalanced learning? An imbalanced classification problem is an example of a classification problem where the distribution of examples across the known classes is…
What is image pixel intensity? Image Segmentation Techniques Since pixel intensity value is the primary information stored within pixels, it is the most popular and…
What is model calibration in finance? THE calibration of a financial model is the process of tuning. the model parameters to fit market data. Unlike…
Is the quantile function the same as the CDF? As we can see, visually the Quantile Function is just the CDF rotated: Since it is…
What is state system variable? A state variable is one of the set of variables that are used to describe the mathematical “state”of a dynamical…
Are bounded random variables sub-Gaussian? Using the inequality (2n + 1)! ≥ n! 2n, we see that X is a-subgaussian. More generally, any centered and…
How do you test association between continuous and categorical variables? There are three big-picture methods to understand if a continuous and categorical are significantly correlated…