What is the Standard Deviation?
Explanation of the standard deviation and the relationship to the variance.
Statistics
Principal Component Analysis – easily explained!
Principal Component Analysis explained with examples and defining the prerequisites.
Population and Sample – simply explained!
Definition of population and sample with examples, advantages of sampling and sampling methods.
Correlation and Causation – easily explained!
Correlation and causality: explain differences using examples, prove correlation coefficient and causality.
Normal Distribution
Normal distribution with definition, calculation example and the distinction between density function and distribution function.
Expected Value – easily explained!
Expected Value explained with examples and difference to arithmetic mean shown.