Useful tips for everyday
How does decision tree algorithm work for regression? Decision Tree – Regression. Decision tree builds regression or classification models in the form of a tree…
What is an indirect effect in mediation? An indirect effect is calculated by multiplying the paths that constitute the effect. The magnitude of the indirect…
How do you standardize new data? Standardization in case of real-time predictions Min-max normalization: transforms the data points to belong to a certain range, typically…
How do you assess goodness-of-fit for a non linear model? Goodness of fit for nonlinear model Perform a linear regression with independent variables A and…
How do you use cross-validation for classification? k-Fold Cross-Validation Take the group as a hold out or test data set. Take the remaining groups as…
How do you know if something follows a normal distribution? In order to be considered a normal distribution, a data set (when graphed) must follow…
How do you compare AIC values? To compare models using AIC, you need to calculate the AIC of each model. If a model is more…
How do you know if a joint probability distribution is independent? Independence: X and Y are called independent if the joint p.d.f. is the product…
Is AB test causal inference? Causal inference is the theory behind AB testing. This is what causal inference is all about. Causal inference is a…
How do you describe the sampling distribution of the sample mean? If the population is normal to begin with then the sample mean also has…