Useful tips for everyday
What is single neural network? A single-layer neural network represents the most simple form of neural network, in which there is only one layer of…
What does it mean to say the data is normally distributed? A normal distribution of data is one in which the majority of data points…
Can you use k-fold cross validation with time series? Is there any reference showing the applicability of k-fold cross-validation with time series. Time-series (or other…
What is acceptable error rate? An acceptable database error rate should be defined prior to the study beginning, and must be considerably below 1%. Finally,…
What is measure of relationship in statistics? Definition – are statistical measures which show a relationship between two or more variables or two or more…
Why does Ridge Regression help with multicollinearity? Ridge Regression is a technique for analyzing multiple regression data that suffer from multicollinearity. By adding a degree…
What is the main difference between semi-supervised learning and unsupervised learning? Semi-supervised learning aims to label unlabeled data points using knowledge learned from a small…
Are Categorical variables fixed effects? Fixed effects in cross-sectional analysis. Now that we understand categorical variables, here’s a secret: Fixed effects (in the context of…
Can Chi-square test be used for more than two categories? Chi-square can also be used with more than two categories. For instance, we might examine…
Does a singular matrix have linearly independent columns? The columns of A are linearly independent (as vectors). The rows of A are linearly independent. If…