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Lesson 3:  Producing Data

Contents

This lesson covers ...

• Objectives
• Key Terms
• Reading Assignment
• Internet Links
• Study Questions
•  Study Notes
• Written Assignment

Objectives

After completing this lesson, you should be able to:

1. Understand benefits of random sampling.
2. Understand basic principles of sampling designs.
3. Understand basic principles of experimental design.
4. Understand distinction between population and sample.

Reading Assignment

Read Chapter 3 in the text.

Key Terms

• Experimental Design
• Sampling Design
• Sample Survey
• Observational Study
• Experiment
• Experimental Unit

Internet Links

Each day you go online, be sure to check out the Random Statistical Quote for the Day
  Investigate the following examples from other Internet sites:

• UCLA Electronic Text  Take a look at the sampling presentation.
• Producing Data from SurfStat.australia  Presents nice examples of producing data.
• What is a Survey? Information from the American Statistical Association.

Study Questions

1. What kind of sampling design is being used if we survey a group of students from UMM that have been selected at random from a list of all students currently registered at UMM?
2. What kind of sampling design is being used if we select 20 UMM freshmen from a list of all freshmen, 20 sophomores from a list of all sophomores, 20 juniors from a list of all juniors, and 20 seniors from a list of all seniors?
3. If we compare the income levels for patients that visit the Emergency Room at a local hospital with those that visit a nearby clinic during a two-week period, is this an observational study or an experiment?
4. What is a sample survey?
5. What is an experimental design?

Activities

Random Fortunes Part I

Random Fortunes Part II

Study Notes

Lecture notesLecture Notes from chapter 3 in html format.

Written Assignment

Do the following assignment. The problems listed are from the homework sections of the cdrom in the stated chapters. When you have worked on the problems and are ready to turn in your findings, click the assignment link below. It will take you to a template where you can fill in your answers to the questions. When you are finished entering your answers, click the submit button, you will be given the location of your completed web page.  You may check your assignment responses with your browser at any time, and submit a revision at any time before the due date of the assignment. The due data is Monday July 26.

Lesson Submission 3

Problems: 3.8, 3.22, 3.36, 3.38, 3.47, 3.54

Assignment #3.