questionnaire design Flashcards
week 5
1
Q
what is a questionnaire?
A
- collects answers to pre-set Qs
- gathers info or measures variables
- provide a snapshot of how things are at a specific time
- Q that require a ‘written’ response
2
Q
WHY would you use questionnaires
A
- form entire means for how data is collected
- alongside interviews and focus groups
- determine effectiveness of an intervention collecting info pre- and post-intervention
3
Q
WHEN would you use questionnaires
A
- to obtain info relating to:
attitudes
beliefs
behaviour - to find out more about participants
4
Q
difference between surveys and questionnaires
A
survey = type of design
questionnaire = specific tool to gather info
5
Q
STRENGTHS of questionnaires
A
- economical
- unobtrusive for participants
- suitable for large sample sizes
- can measure a wide variety of unobservable data (preferences, traits, attitudes, beliefs, behaviours, factual info)
6
Q
LIMITATIONS of questionnaires
A
- non-response bias (whether non-respondents aren’t responding due to a systematic reason)
- sampling bias (not getting a representative sample - result of accessibility)
- social desirability bias (self-portrayal in soc desirable manner)
- recall bias (memory dependent)
7
Q
what are the 4 types of quantitative scaling
A
- nominal
- ordinal
- interval
- ratio
8
Q
what is nominal measure
A
- a categorical variable
- NO order of magnitude is implied when comparing one category to another
- useful for grouping data
example - football team supported
9
Q
what is ordinal measure
A
- variables that can be rank ordered
- categories have meaningful difference but the magnitude of difference between ranks is not uniform
10
Q
what is interval measure
A
-the difference in response options is meaningful and is of an EQUAL interval
- no absolute zero point
11
Q
what is ratio measure
A
- intervals between values are meaningful
- there IS a true zero point
example - weight, distance
