Explain what can you do if you just cannot

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Reference no: EM1355395

Why is it important that a sample be random? For its validity, all hypothesis testing depends heavily on the assumption that the sample that is used was drawn using probability sampling techniques.

• Why is this important?

• What can you do if you just cannot use a probability sampling technique? (For example, suppose there is no good sampling frame available for the population of interest.)

Reference no: EM1355395

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