investigate questionnaire design principles; for example, simple language, unambiguous questions, consideration of number of choices, issues of privacy and ethics, freedom from bias
3.4.8
describe the faults in the collection of data process
3.4.9
describe sources of error in surveys; for example, sampling error and measurement error
3.4.10
describe possible misrepresentation of the results of a survey due to the unreliability of generalising the survey findings to the entire population, for example, because of limited sample size or chance variation between samples
