Question: Is this a random sample of DATA 2 X 0 2 students? What are the potential biases? Which variables are most likely to be subjected

Is this a random sample of DATA2X02 students?
What are the potential biases? Which variables are most likely to be subjected to this bias?
Which questions needed improvement to generate useful data (e.g. in terms of the way the question was phrased or response validation)?

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