You're researching the effect of a newly found medication on the blood pressure of people with hypertension. To see if the medication works effectively, you divide people into two seperate groups. One group takes the newly found medication, while the other group takes a sugar pill.
Independent Variable: the pill which the people recieve
Dependent Variable: blood pressure measured
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Explanation:
1) population demographic.
2) the price of related goods.
3) the taste and preference.
4) the income if the consumer.
5)Expectations of future changes in price.
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