The purpose of this (experimental? survey?) study is (was? will be?) to test the theory of that (compares? relates?) the (independent variable) to (dependent variable) for (subjects? sample?) at (the research site). The independent variable (s) will be defined generally as (provide a general definition). The dependent variable(s) will be defined generally as (provide a general definition).

The purpose of this experimental study will be the amount of light compared to the growth of plants. The amount of light will be changed to see its effect on the growth of plants in a sample of plants at a garden. The independent variable will be defined generally as the variable which is changed. The dependent variable is the variable which is under study and the effect of the independent variable on it is studied.  

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