Chapter 1 for Stats

# Chapter 1 for Stats - Chapter 1 Measurement Statistics and...

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Chapter 1 Measurement, Statistics, and Research

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Chapter One Broad-Based Learning Goal Describe specific terminology and approaches that are used in research design, implementation, and in statistics used to analyze the research.
What is measurement? measurement: process of comparing value to a standard data: result of measurement

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What is measurement? statistics: mathematical technique by which data are organized, treated, and presented for interpretation and evaluation evaluation: philosophical process of determining worth of data
What is measurement? validity: soundness or appropriateness of the test in measuring what it is designed to measure reliability: measure of consistency of the data objectivity: data are collected without bias by investigator

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Learning goal Describe the differences between evaluating the validity, reliability, and objectivity of data that are collected through research.
The Process of Measurement Four steps: 1. 2. 3. 4. English system of measurement compared to metric system

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Variables and Constants variable: characteristic of a person, place, or thing that can assume more than one value constant: characteristic that can assume only one value
Types of variables continuous variable: theoretically can assume any value discrete variables: limited to certain numbers, usually whole numbers or integers

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Learning goal Be able to distinguish between continuous and discrete variables.
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## This note was uploaded on 05/25/2008 for the course IPHY 2800 taught by Professor Decker,mik during the Fall '08 term at Colorado.

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Chapter 1 for Stats - Chapter 1 Measurement Statistics and...

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