There are different types of error associated with survey research. These are:
- Sampling error (random sampling error, systematic error, frame error, population specification error, selection error,
- Measurement error(surrogate error, interviewer error, measurement instrument bias, non-response bias and response bias.
(a) Door to door. Used to be a popular method however, in recent times it has decline becuase:
- Changes in availability
- Deteriorating co-operation rates
- Unsafe neighbourhoods
- Lacks of hands on control of interviewers
- Interviewer tolerance
- Cheating or fudging of answers
- Slow and expensive process
(c) Executive interviews
(d) Telephone interviews
(e) Computer assisted telephone interviews
(f) Direct computer interview
(g) Self administered interviews
(h) postal surveys
There are a number of factors that determine which choice of survey method will be chosen. These are:
- The sampling precision required
- Budget available
- The need to expose the respondent to various stimuli
- The validity and reliability of the data is often decided by the survey method used.
- The need for the respondent to perform specialised tasks
- The length of the questions may constrain the survey method used.
No comments:
Post a Comment