Your Turn For each example below, identify the independent and dependent variabl

Question

Your Turn For each example below, identify the independent and dependent variables: 1. A different concentrations of a nutrient solution. She takes her measurements once per week over the course of 3 months. botanist measures the height of four groups of pea plants that are grown using Which is/are independent variable(s)? Which is/are dependent variable(s)? 2. A scientist studies the survival rate of 4 groups of AIDS patients. One group receives no drug treatment, the second group receives the drug AZT only, the third group receives the drug saquinavir (a protease inhibitor) only, and the fourth group receives both AZT and saquinavir. The survival rate is recorded once per month over the course of 2 years Which is/are independent variable(s)? Which is/are dependent variable(s)?

Explanation / Answer

1)answer

Different concentration of the Nutrient solution is Independent variable because there concentration remains fixed through the observation period four group/genotype are also Independent variable because the genotype will not be changed by changing the concentration of nutrient solution

Height of pea plant is dependent variable because it depends on concentration of nutrient solution as well as to which group or genotype the pea plant belongs to.

2) Independent variable are and drugs

Depend ent variable are AIDS patient because their survival is dependent on the drug treatment

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