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Levels of measurement

The level of measurement is one of the most important properties of variables. It determines which statistical tests will be available to the researcher during the course of the...

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Pearson's chi-square correlation test

Popular statistical tests include Pearson's chi-square tests. It is worth noting at the outset that this test has more than one application. In this material, I will discuss the...

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Entropy

Entropy is a measure of disorder or uncertainty in a probability distribution.

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Gini index

The Gini index is a measure of the concentration of a variable's distribution.

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Logistic regression

Regression is used to predict the value of the dependent (predicted) variable on the basis of the value of the independent variable or variables (predictors).

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Neural networks

Neural networks are a family of algorithms that are becoming increasingly popular for tasks in the areas of prediction, classification, and clustering.

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Factor analysis

The aim of factor analysis is to explain as much of the variation as possible with as few variables as possible.

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