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Business Research Methods William G. Zikmund Chapter 19: Editing and Coding.

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Presentation on theme: "Business Research Methods William G. Zikmund Chapter 19: Editing and Coding."— Presentation transcript:

1 Business Research Methods William G. Zikmund Chapter 19: Editing and Coding

2 Copyright © 2000 by Harcourt, Inc. All rights reserved. Requests for permission to make copies of any part of the work should be mailed to the following address: Permissions Department, Harcourt, Inc., 6277 Sea Harbor Drive, Orlando, Florida 32887-6777.

3 Copyright © 2000 by Harcourt, Inc. All rights reserved. DATA ANALYSIS DATA ENTRY STAGES OF DATA ANALYSIS ERROR CHECKING AND VERIFICATION CODING EDITING

4 Copyright © 2000 by Harcourt, Inc. All rights reserved. EDITING THE PROCESS OF CHECKING AND ADJUSTING THE DATA –FOR OMISSIONS –FOR LEGIBILITY –FOR CONSISTENCY AND READYING THEM FOR CODING AND STORAGE

5 Copyright © 2000 by Harcourt, Inc. All rights reserved. BIRTH YEAR RECORDED BY INTERVIEWER 1873? 1973 MORE LIKELY

6 Copyright © 2000 by Harcourt, Inc. All rights reserved. CODING THE PROCESS OF IDENTIFYING AND ASSIGNING A NUMERICAL SCORE OR OTHER CHARACTER SYMBOL TO PREVIOUSLY EDITED DATA

7 Copyright © 2000 by Harcourt, Inc. All rights reserved. EDITING IN-HOUSEEDITING FIELD EDITING

8 Copyright © 2000 by Harcourt, Inc. All rights reserved. CONSISTENCY COMPLETENESS QUESTIONSANSWERED OUT OF ORDER REASONS FOR EDITING

9 Copyright © 2000 by Harcourt, Inc. All rights reserved. “I DON’T KNOW” Legitimate don’t know Reluctant don’t know Confused don’t know

10 Copyright © 2000 by Harcourt, Inc. All rights reserved. CODES The rules for interpreting, classifying, and recording data in the coding process. The actual numerical or other character symbols.

11 Copyright © 2000 by Harcourt, Inc. All rights reserved. 1a. How many years have you been playing tennis on a regular basis? Number of years: __________ b. What is your level of play? Novice............... -1Advanced.......-4 Lower Intermediate.....-2Expert.........-5 Upper Intermediate..... -3Teaching Pro.... -6 c. In the last 12 months, has your level of play improved, remained the same or decreased? Improved..............-1Decreased....... -3 Remained the same.....-2

12 Copyright © 2000 by Harcourt, Inc. All rights reserved. 2a. Do you belong to a club with tennis facilities?Yes....... -1 No....... -2 b. How many people in your household - including yourself - play tennis? Number who play tennis ___________ 3a. Why do you play tennis? (Please “X” all that apply.) To have fun.......... -1 To stay fit............ -2 To be with friends...... -3 To improve my game...-4 To compete...........-5 To win...............-6 b. In the past 12 months, have you purchased any tennis instructional books or video tapes?Yes....... -1 No....... -2

13 Copyright © 2000 by Harcourt, Inc. All rights reserved. 4. Please rate each of the following with regard to this flight, if applicable. Excellent Good Fair Poor 1 2 3 4 Courtesy and Treatment from the: Skycap at airport.............. Airport Ticket Counter Agent..... Boarding Point (Gate) Agent..... Flight Attendants.............. Your Meal or Snack............. Beverage Service.............. Seat Comfort.................. Carry-On Stowage Space........ Cabin Cleanliness............. Video/Stereo Entertainment...... On-Time Departure............

14 Copyright © 2000 by Harcourt, Inc. All rights reserved. “I believe that people judge your success by the kind of car you drive.” Strongly agree 1 Mildly agree 2 Neither agree nor disagree 3 Mildly agree 4 Strongly disagree 5 Strongly agree + 1 Mildly agree +2 Neither agree nor disagree 0 Mildly agree - 1 Strongly disagree - 2

15 Copyright © 2000 by Harcourt, Inc. All rights reserved. RULES FOR CODING Categories should be exhaustive Categories should be mutually exclusive and independent

16 Copyright © 2000 by Harcourt, Inc. All rights reserved. CODING OPEN-ENDED RESPONSES

17 Copyright © 2000 by Harcourt, Inc. All rights reserved. CODE BOOK Identifies each variable Provides a variable’s description Identifies each code name and position on storage medium

18 Copyright © 2000 by Harcourt, Inc. All rights reserved. DATA ENTRY The process of transforming data from the research project to computers. Optical scanning systems –Marked-sensed questionnaires

19 Copyright © 2000 by Harcourt, Inc. All rights reserved. RECODE Recoding is the process of using a computer to convert original codes used for raw data to codes that are more suitable for analysis. Var1 = 8 - Var1

20 Copyright © 2000 by Harcourt, Inc. All rights reserved. ERROR CHECKING AND VERIFICATION Data cleaning


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