Question

sort the variables of these three studies based on whether they are independent or dependent variables
Study 1: the effect of light on flowering patterns of plants
Study 2: the effect of pencillin on the growth of the E. coli
Study 3: the effect of progesterone on the ovulation of rats.


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Answer 1

1). light is an independent variable

2). flowering pattern is a dependent variable

3). pencillin is an independent variable

4). growth of e. coli is a dependent variable

5). progesterone is an independent variable

6). ovulation is a dependent variable

Answer 2

Answer:

In any experiment, independent variable refers to the variable that is being changed by the scientist. In other words, it is variable that is being studied in the experiment.

Dependent variable refers to the variable the amount of which is dependent upon the independent variable. In other words, it is being observed in the experiment.

For example, in study 1, the effect of light (intensity or duration of light) is being studied. Thus, it is the independent variable. The flowering patterns of plants are being observed. Thus, if is a dependent variable.

Similarly, in study 2, effect of penicillin (concentration) is independent and growth of E. coli dependent variable.

In study 3, effect of progesterone (concentration) is independent and ovulation is dependent variable.