Question

1. one tank of gold fish is fed the normal amount of food once a day, a second tank is fed twice a day, and a third tank four times a day during a six week study. the fish’s weight is recorded daily.

a. independent variable

b. dependent variable

c. control group

d. experimental group

Explanation:

a. Independent Variable

The independent variable is the factor that is manipulated in an experiment. Here, the feeding frequency (once, twice, four times a day) is what's changed to observe its effect on fish weight.

The dependent variable is what's measured or observed as a result of the independent variable. The fish's weight is recorded to see how it's affected by feeding frequency.

The control group is the group with the "normal" or standard condition for comparison. The tank fed once a day (normal amount) serves as the baseline.

Answer:

Feeding frequency (number of times fed per day)

b. Dependent Variable