Indicate whether the following statements are 'True' or 'False'.(6 marks; 2 marks each)

(a)In quota sampling, wetry to make a sample that is as representative as possible of the population being studied. We can say it is the non-probability based equivalent of thestratified random sample.

(b)The biggest disadvantage of systematic sampling is that the process of selecting the sample can interact with a hidden periodic trait within the population. However, this could be overcome by changing the random start.

(c)A stratified random sample is a census of the primary units (the strata) followed by a simple random sampling (SRS) of the secondary units within each primary unit. A cluster sample is an SRS of the primary units (the clusters) followed by a census of the secondary units within each selected primary unit.