Useful tips for everyday
What is pooled cross-sectional data? Definition 1 (Pooled cross-section data) Randomly sampled cross sections of. individuals at different points in time. Example: Current population survey…
What is the result of random forest? Random forest adds additional randomness to the model, while growing the trees. Instead of searching for the most…
What is interaction in multiple regression? 1. Interactions in Multiple Linear Regression. Basic Ideas. Interaction: An interaction occurs when an independent variable has a different…
What are the basic procedures of hypothesis testing? Then, we keep returning to the basic procedures of hypothesis testing, each time adding a little more…
How is a Gaussian mixture model probabilistic? A Gaussian mixture model is a probabilistic model that assumes all the data points are generated from a…
How often do you need to tag tools? All testing and tagging of electrical equipment, including RCD’s (safety switch) must be undertaken by a competent…
Which is an example of a mixture of normals? The most general case of the mixture of normals model “mixes” or averages the normal distribution…
What are the different types of clustering algorithms? Most unsupervised learning methods are a form of cluster analysis. Clustering algorithms fall into two broad groups:…
What is the relationship between the population mean and the mean of the sample means? 1. The mean of the distribution of sample means is…
How do you classify relationships? There are 9 types of relations in maths namely: empty relation, full relation, reflexive relation, irreflexive relation, symmetric relation, anti-symmetric…