Sampling Quiz

Probability sampling is another name for random sampling

• True

• False

Random sampling can reduce bias in the selection of samples

• False

• True

Convenience samples can be generalised to the population

• True

• False

Non-random sampling is used for qualitative designs

• True

• False

What is the first step taken when using random sampling

• Calculate the sampling frame

• Clearly identify and define the population of interest

• Use a random number generator

• Assign numbers to possible cases

NAME THE METHOD: A politician asks his neighbours their opinions about a controversial issue

• Simple random sample

• Stratified random sample

• Cluster random sample

• None of the above

NAME THE METHOD: A researcher selects cases meeting predefined criteria non-randomly

• Convenience sampling

• Snowball sampling

• Stratified random sampling

• Quota sampling

NAME THE METHOD: sampling every 10th person from a list of patients attending a GP practice

• Systematic random sampling

• Purposive sampling

• Snowball sampling

• Cluster random sampling

Sampling bias is...

• When some people have MORE chance of being selected than others

• When members of a population have EQUAL chance of being selected

• More likely to happen in random sampling

• None of the above

"Each member of the population is assigned to a specific group or ‘stratum’ based on some characteristic they possess that could influence study outcomes, or are desired"

What is the name of this type of sampling?