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# Distribution tutorial

Learn how to describe the distribution of a variable, make inferences about the population parameters, and exclude observations from analysis.

Simon Newcomb measured the time required for light to travel from his laboratory on the Potomac River to a mirror at the base of the Washington Monument and back, a total distance of about 7400 meters. The data are used to estimate the speed of light. For more information see DASL Story: Estimating the Speed of Light

In this tutorial you will perform the following tasks:

- Plotting the distribution of the data

Create a histogram to see the distribution of the data. - Estimating the population mean

Add an estimator to estimate the population mean. - Excluding outliers

Exclude outliers, and recalculate the analysis, to see their effect. - Changing the histogram classes

Edit the histogram classes to customize the analysis report ready for publication.

- Tutorials
- Distribution tutorial
- Plotting the distribution of the data
- Estimating the population mean
- Excluding outliers
- Changing the histogram classes
- Correlation / PCA tutorial
- Compare groups means tutorial
- Association in 2-way contingency tables tutorial
- Simple linear regression tutorial
- Bland-Altman method comparison tutorial
- Estimating the precision of a measurement procedure (CLSI EP05-A3)
- Evaluating the linearity of a measurement procedure (CLSI EP06-A)
- Verifying the precision of a measurement procedure against a performance claim and estimating the bias (CLSI EP15-A3)
- Pareto charts tutorial
- Process control charts tutorial
- Process capability tutorial

Version 5.30

Published 15-Apr-2019