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MB0040 Q1 (b) A town has 15 neighbourhoods. If you interviewed everyone living in one particular neighbourhood, would you be interviewing a population or a sample from the town? Would this be a random sample? If you had a list of everyone living in the town, called a frame, and you randomly selected 100 people from all neighbourhoods, would this a random sample?

Answer: (b) If want to do statistic in a particular area and interviewed everyone then it is called as population and if you doing statistic analysis for a town and interviewed only 15 neighborhoods then it is called that interviewing a sample from town. It is also called “chunk” which refers to the fraction of the population being investigated which is selected neither by probability nor by judgment.

Moreover, a list or framework should be available for the selection of the sample. It is used to make pilot studies. However, there is a high chance of bias being introduced.

If you had a list of everyone living in the town, called a frame, and you randomly selected 100 people from all neighborhoods, then this called a random sample.

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