Lectures 5 and 6 Flashcards
Proprietary Info
Brand Name & Manufacturer
nominal scales
Mutually exclusive and collectively exhaustive categories
ordinal scales
Implies statement of greater than and less than (ranking)
interval scales
Equality of interval (Equal distance exists between
numbers)
ratio scales
Absolute zero point; flat numeric data
characteristics of good measurement scales
- Reliability: The degree to which repeated measurements yield consistent results
- Validity: Are we measuring what we think we are
measuring? - Sensitivity: Ability to discriminate between meaningful
differences in attitudes
scaling tips
Keep the scales relatively simple • State instructions clearly • A “don’t know” option, if necessary • Have enough “white” space between scales & questions • Limit open ended questions • Pilot test the scales with groups similar to the planned respondent group
questionnaire development
Step 1: Specify what information will be sought
Step 2: Determine type of questionnaire and method of administration
Step 3: Determine content of individual questions
Step 4: Determine form of response to each question
Step 5: Determine wording to each question
Step 6: Determine question sequence
Step 7: Determine physical characteristics of questionnaire
Step 8: Reexamine step 1-7 and revise if necessary
Step 9: Pretest questionnaire and revise if necessary
step 1
Precision at earlier stage
Dummy Tables
Interesting vs. relevant information
step 2
Questionnaire type: Structure, disguise Method of administration: -personal, mail, telephone, e-mail, web… Initial Questions: screeners/warm ups
Screeners
• Helps to winnow the respondents to the most appropriate people
- Have you shopped at the Gap in the past month?
• Establish respondent “buy-in” for the survey
Warm-ups
• Gets the respondent thinking about the topic at hand
- How often do you go shopping?
step 3
Is the question necessary?
Are several questions needed instead of one?
Do respondents have the necessary information and can
they remember it?
Will respondents give the information?
-Effort
-Sensitivity
Branching question
- Do you have a personal computer (PC) at home?
___ Yes ___ No—please go to Q.3 - What brand of PC do you own? _________
step 4
Open-ended questions
-What do you like and dislike about brand A?
Fixed-alternative questions
- Scales
- Dichotomous
- Multichotomous