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Survey Methods Test
Term | Definition |
---|---|
3 characteristics of a sample frame | Comprehensiveness, probability of selection, efficiency |
What are the 3 characteristics of a survey? | Stimulus, response, attaches meaning |
X=t+e | obtained score = true value + error |
What are the two types of error? | systematic and random |
Sampling frame (coverage) | The set of people that have a chance to be selected |
Simple random sample | drawing samples one at a time independent of one another and without replacement |
Two principles of a sample design | bias and precision |
Issues associated with longitudinal tests | Conditioning, attrition, attitudes change over time |
sigma/ sqrt of N | Standard error of measurement |
Proportionate stratified sampling | the same proportion of people are sampled from each strata |
Disproportionate stratified sampling | using a different proportion from each strata |
Why use stratification? | Can increase representativeness, can increase the precision of the survey means |