I want to know why my yard is so well lit at night.So I watch it over a period of several nights and notice that it is most well lit when the moon is full, less well lit at quarter moon, and most poorly lit at new moon.Therefore, I conclude that moonlight is principally responsible for lighting my yard at night.Which method did I use to determine this?

Question

Quizplus · Accepted Answer

The method used in this scenario is concomitant variations, as the researcher observed a correlation between the amount of moonlight present and the level of lighting in the yard. As the amount of moonlight changed (full moon, quarter moon, new moon), the level of lighting in the yard changed as well, indicating a causal relationship between the two variables.

I Want to Know Why My Yard Is So Well