## Permutation

A permutation, also called an “arrangement number” or “order,” is a rearrangement of the elements of an ordered list S into a one-to-one correspondence...

## Scatterplot

Description It is also known as a dispersion graph, point graph, X-Y graph, dispersion graph or dispersion diagram. Scatterplots utilize a collection of points...

## Stratification

Stratification means arranging something, or something that has been arranged, into categories. By the time you figure out the complex social stratification of your...

## What is the Coefficient of Variation?

A coefficient of variation (CV) shall be a measure of relative variability. It is the ratio of the standard deviation to the mean (mean)....

## What is a Confidence Interval?

Statisticians use a confidence interval to describe the amount of uncertainty associated with a sample estimate of a population parameter. How to Interpret Confidence...

## Learning Objectives

Use summation notation to express the sum of all numbers Use summation notation to express the sum of a subset of numbers Use summation...

## Inferential Statistics

With inferential statistics, you are attempting to arrive at resolutions that reach out past the quick information alone. For example, we utilize statistics to...