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Card 3 / 4:
For each of the following situations, state the independent variable and the dependent variable.
A study is done to determine if elderly drivers are involved in more motor vehicle fatalities than other drivers. The number of fatalities per 100,000 drivers is compared to the age of drivers.A study is done to determine if the weekly grocery bill changes based on the number of family members.Insurance companies base life insurance premiums partially on the age of the applicant.Utility bills vary according to power consumption.A study is done to determine if a higher education reduces the crime rate in a population.
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