Useful tips for everyday
Can you do structural equation modeling in R? The sem package provides basic structural equation modeling facilities in R, including the ability to fit structural…
What is regression with Arima errors? Regression with (Seasonal) ARIMA errors (SARIMAX) is a time series regression model that brings together two powerful regression models…
Are polynomials used in machine learning? Typically linear algorithms, such as linear regression and logistic regression, respond well to the use of polynomial input variables.…
What is the non-parametric equivalent of the linear regression? Kendall–Theil regression Kendall–Theil regression is a completely nonparametric approach to linear regression where there is one…
What is kernel in linear transformation? The kernel or null-space of a linear transformation is the set of all the vectors of the input space…
What is the expected number of heads that comes up when a fair coin is flipped 5 times? 1. What is the expected number of…
What are parameters in regression equation? The parameter α is called the constant or intercept, and represents the expected response when xi=0. (This quantity may…
Can principal component analysis be used for exploratory analysis? PCA is mostly used as a tool in exploratory data analysis and for making predictive models.…
What is the relationship between correlation and p-value? The two most commonly used statistical tests for establishing relationship between variables are correlation and p-value. Correlation…
What is equilibrium distribution? A physical, economic or social system which has settled down to a stable statistical behaviour has a stationary, or equilibrium, distribution…