Introductory Statistics

[cal] [docs] [modules] [eBook]

IS: Procedure Identification Practice

[Procedure Practice]
Procedure Identification Practice

This web page gives you practice in identifying the distribution, given the description.

Purpose

Welcome to the page that helps you determine the important characteristics of distributions. In practicing here, you will gain experience in:

 

The Random Variable

Here is the description of the random variable. Think about the description. Ask the important questions. Is this discrete or continuous? Are you describing observations or averages? Does the random variable have limitations? Get to know the random variable by answering these questions. Now that you have your answer, click on the box corresponding to your choice to see if it is the correct answer. Once you do, the explanation (and the correct answer) will show.

the amount of caffeine in a can of Diet Pepsi

Since “amount” indicates a continuous random variable, we know the distribution is the Uniform, Exponential, or Normal. There is a target amount of caffeine in a can of Diet Pepsi (35mg). The actual amount in a can is this amount, give-or-take a little. Thus, this random variable would follow a Normal distribution.

 

Another Example

Let’s try another example. Click “Refresh” in your browser to get another research hypothesis.

This page was last modified on 25 February 2025.
All rights reserved by Ole J. Forsberg, PhD, ©2008–2025. No reproduction of any of this material is allowed without explicit written permission of the copyright holder.