文档介绍：CHAPTER thirteen Data Processing,Basic Data Analysis,and the Statistical Testing of Differences
Copyright ? 2000 South-Western College Publishing Co1>.
CHAPTER
thirteen
Data Processing, Basic Data Analysis, and the
Statistical Testing
of
Differences
Learning Objectives
1. To develop an understanding of the importance and nature of quality control checks.
2. To understand the data entry process and data entry alternatives.
3. To learn how surveys are tabulated and crosstabulated.
4. To understand how to state and test hypotheses.
5. To describe mon statistical tests of differences.
STEP ONE: VALIDATION and EDITING
Validation
The process of ascertaining that interviews actually were conducted as specified.
Editing
Checking for interviewer mistakes
1. Did the interviewer ask or record answers for certain questions?
2. Skip patterns followed?
3. Open-ended responses checked?
To understand the importance and nature of quality control.
STEP TWO: CODING
Coding Defined
Grouping and assigning numeric codes to the responses
The Coding Process
1. Listing responses
2. Consolidating responses
3. Setting codes
4. Entering codes
To understand the data-entry process and data-entry alternatives.
Intelligent Versus Dumb Entry
Logical checking of puters
The Data Entry Process
The mechanics of the process
Optical Scanning
A device that can “read” responses o