2. Part Four ANALYSIS AND PRESENTATION OF DATA
McGraw-Hill/Irwin
© 2003 The McGraw-Hill Companies, Inc.,All Rights Reserved.

3. Chapter Fifteen DATA PREPARATION AND DESCRIPTION

4. Editing Detects errors and omissions, Corrects them when possible, and
Certifies that minimum data quality standards are achieved

5. Editing (cont.) Guarantees that data are accurate
consistent with other information
uniformly entered
complete
arranged to simplify coding and tabulation

6. Editing
Field Editing
translation of ad hoc abbreviations and symbols used during data collection
validation of the field results.
Central Editing

7. Coding Rules that guide the establishment of category sets
Appropriate to the research problem and purpose
Exhaustive
Mutually exclusive
Derived from one classification principle

8. Content Analysis for Coding
Measures the semantic content of a message
Researches the objective, systematic, and quantitative description of the content of a communication
Syntactical unit
Referential unit
Propositional unit
Thematic unit

9. Data Entry Options
Optical scanning
Voice recognition
Keyboard

10. Data Entry Formats
Database with full screen editor
Spreadsheet

11. Descriptive Statistics
Distribution Descriptors
Location
Spread
Shape

12. Descriptive Statistics
Distribution Descriptors
Location
Central Tendency
Mean
Median
Mode

13. Descriptive Statistics
Distribution Descriptors
Spread
Variance,
Standard Deviation,
Range,
Interquartile Range

14. Descriptive Statistics
Distribution Descriptors
Shape
Skewness
Kurtosis