Explain the disadvantage of each plan

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Reference no: EM131771553

Question: Suppose you wanted to know if men or women students spend more money on clothes. You consider two different plans for carrying out an observational study:

Plan 1: Ask the participants how much they spent on clothes during the last 3 months; then compare the men and women.

Plan 2: Ask the participants to keep a diary in which they record their clothing expenditures for the next 3 months; then compare the men and women.

a. Which of these plans is a retrospective study? What term is used for the other plan?

b. Give one disadvantage of each plan.

Reference no: EM131771553

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