β Must-know
Further detail
π A pilot study should be conducted before releasing a survey to identify problems in the questionnaire.
Purpose β questions β administration β sampling
β Must-know
π Open-ended questions allow free responses that are more complete and harder to code, whereas close-ended questions offer limited choices that are easier to code but may be simplistic or forced.
Further detail
Open-ended questions require more effort from participants, are more suited to smaller or preliminary studies, and are less prone to coding errors than close-ended questions.
A categorical question can ask whether a respondent is single, married, divorced, or widowed.
A visual analogue scale asks respondents to mark a position on a line between two endpoints, such as βNot pain at allβ and βIn a lot of pain.β
Open-ended gives richer responses; close-ended is easier to code
β Must-know
π Each survey item should address one clearly stated issue and avoid double-barreled questions that ask about two issues at once.
π Questionnaires should use unambiguous wording so that response options have a clear meaning.
π Acquiescence is the tendency to agree regardless of question content, and possible solutions include reverse scoring and attention checks.
π Question framing should avoid wording that biases results, especially when asking sensitive questions.
Further detail
DOASF: Double-barreled, Order, Acquiescence, Social desirability, Framing
β Must-know
π Probability sampling aims to give individuals an equal and independent chance of being selected.
Further detail
Non-probability convenience sampling selects participants for practical reasons, such as recruiting HP1100 students.
Simple random sampling can use a random number generator to select participants.
Multistage sampling randomly selects individuals within selected clusters, such as sampling individuals within each of three selected factories.
Probability sampling gives selection chances; convenience sampling prioritizes practicality
β Must-know
π Observational research still requires clear, specific, and objective measurement of behavior.
Further detail
Observation records behavior, archival research reuses data, and case studies examine individual cases
Non-Experimental Methods Compared
| Method | Data source or setting | Primary focus |
|---|---|---|
| Survey | Participantsβ responses | Attitudes, experiences, or opinions |
| Observation | Natural environment | Behavior with minimal disturbance |
| Archival research | Existing data | Previously collected records or datasets |
| Case study | Individual case | In-depth examination of a phenomenon |
Take a 10-question practice quiz on Week 3, with every answer explained.
1. What is the central purpose of survey research?
2. Which sequence best represents the main stages of survey design?
Memorize the key concepts of Week 3 with 11 flashcards.
What is the main goal of survey research?
To collect responses to understand a research purpose.
What is the purpose of conducting a pilot study before a survey?
To identify problems in the questionnaire.
What distinguishes open-ended from close-ended questions in surveys?
Open-ended questions allow free, complete responses; close-ended offer limited, easier-to-code choices.
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