The document discusses two methods of data collection: the census method and the sample method. The census method compiles statistical data from all members of the target population under study. The sample method selects a sample of entities from the target population for statistical analysis, rather than analyzing the entire population. Different types of sampling methods can be used, including simple random sampling, systematic sampling, cluster sampling, and stratified sampling.

1. Method of Data
Collection
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2. Census Method
 The process used in the census method includes the statistical compilation of
all units or members of the target population under the survey. In this case,
population relates to the entire set of observations connected to a particular
study.
 For instance, if students of a university have to give feedback on teaching
faculty, the former will be held as the population of that study.

3. Sample Method
 Sample method chooses the different sample entities from the targeted
population. This method involves a statistical analysis of an already
determined number of observations that is derived from a larger set of
populations.
 Sample methodology can be used of different kinds; these can be – simple
random sampling or systematic sampling, cluster sampling or stratified
sampling, etc. among others.