Survey errors +++ Flashcards
Respondents thought they knew the answer but they really didn’t.
Response bias
We got the results from our phone survey. We got a lot more females in their 30s and 40s than are in the actual population.
Non-response bias
The Coke example/ the language online example –> loved the website but people didn’t want to learn languages online. Researched the wrong thing/ asked the wrong questions
Surrogate error
A survey asks “how much would u pay for this product” but also didn’t leave enough space for people to answer
Instrument error
I bought a list of names of software engineers to send my survey out in the Silicon Valley area, but a lot of emails on the list were bad because many of the engineers had moved to other companies.
Frame error
Hired someone with poor computer skills who did a bad job entering the data (made mistakes typing)
Processing (input) error
Polled the wealthiest in the area to determine the demand for weekly cleaning. Turned out they all had a full time maid. Didn’t define my population well.
Population error
The person I hired to conduct the survey was rude and in a hurry.
Interviewer error
Even though I told the staff in the company to get an even mix of ages and genders to complete the survey they ended up getting more old women cause that was the easiest.
Selection error
Sample design errors
- selection error
- frame error
- population error
Measurement error
- processing (input) error
- response bias
- non-response bias
- interviewer bias/error
- instrument bias/error
- surrogate information error
A market research experiment:
The researcher changes an explanatory, independent marketing variable (e.g. the marketing mix) to observe changes in the dependent variable.
Causal research
The only type of research that can demonstrate that a change in one variable causes a predictable change in another variable
Laboratory experiments
Conducted in a controlled setting
Lab experiments- advantages
- Ability to control all variables
- Greater internal validity