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4 Tutorials that teach Statistics
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Author: Paul Hannan

This lesson examines the following components of statistical analysis: mean, median, mode, inferential statistics, descriptive statistics, correlation, cause and effect, and spurious (false) correlation.

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Terms to Know
Cause and Effect

A relationship where change in one variable causes the other variable to change.


A close and simultaneous relationship between two or more variables.

Descriptive Statistics

A form of statistical analysis that seeks to make statements about the most "typical" member of a group.

Hawthorne Effect

An effect that occurs when subjects of a study change their behavior in response to being studied.

Inferential Statistics

Applying statistical data from a group or sample to the larger population as a whole.


The arithmetic average of a set of numbers.


The middle point in a set of numbers.


The most frequently occurring number in a set.

Spurious Correlation

A false correlation that is often the result of an unaccounted variable.