Useful tips for everyday
What is the explanatory variable independent variable? An explanatory variable is a type of independent variable. The two terms are often used interchangeably. When a…
How to calculate standard error in R-programmingr? Note that for a linear regression model, the residual standard error refers to the square root of the…
What is the point of a test set? The point of a test set is to give you a final, unbiased performance measure of your…
How do you know if two categorical variables are correlated? You can use chi square test or Cramer’s V for the categorical variables. The correlation…
How does Matlab calculate computational cost? Estimate Computation Costs T s min = T E T max + H L T max , T s…
What is a conceptual questions example? Concept questions need to cover every aspect of the meaning of the language item. For example: “You don’t have…
How do you find the optimal separating hyperplane? To define an optimal hyperplane we need to maximize the width of the margin (w). We find…
What is the relationship between exponential and gamma distribution? Relation to Other Distributions Exponential(λ) = Gamma(1,λ). What is the relation between gamma and chi-square distribution?…
Can OLS be used for logistic regression? In short: Yes, if your response variable is continuous, even if one of the X variables is binary,…
What is L1 regularized logistic regression? ℓ1-regularized logistic regression or so-called sparse logistic regression (Tibshi- rani, 1996), where the weight vector of the classifier has…