Chp2 - Module 2 Types of Data and Graphical Summaries Data...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Module 2 Types of Data and Graphical Summaries Data Types and Graphical Displays Objectives : Be able to • distinguish types of data • select appropriate graphical methods • identify key characteristics of a graph • identify misleading characteristics of a graph Suppose you are operations manager for Mars company. Let’s begin with some questions: 1. What is the average net weight of a bag? 2. How much variation is there in bag weights? 4. What is the average number of M&Ms in a bag? 3. What proportion of bags weigh less than the advertised net weight? 5. Is the proportion of red M&Ms greater than the proportion of blue M&Ms? First Principles The problem must be well-defined, and the question is well stated. A problem clearly defined is half solved. M&M Data Collection Instructions: 1. Record the gross package weight. ____ 2. Predict the number of M&Ms in your package. ____ 4. Record the empty package weight. ____ 3. Remove M&Ms one-by-one and record number of each color First Principles Assume the data are ‘dirty’. Cleaning data may take 80% of your time. After we collect data, then what? Organize / Summarize Data Graphical Numerical First Principles Know what TYPE of data you are analyzing. The type of data drives the analysis. Vocabulary : Variable Any measurable characteristic of a person or thing....
View Full Document

This note was uploaded on 09/26/2009 for the course OM 550 taught by Professor Kin during the Spring '09 term at Universidad Católica del Maule.

Page1 / 17

Chp2 - Module 2 Types of Data and Graphical Summaries Data...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online