Researchers who were studying plant growth raised plants in two separate rooms.One room had taped conversations playing 24 hours a day; the other room was silent.The researchers found that the plants grew better in the room which had the conversations playing.In this study,the type of room (conversation or silence)would be

Question

Quizplus · Accepted Answer

The type of room (conversation or silence) is the variable that is being manipulated by the researchers, and thus it is the independent variable. The dependent variable in this study would be the growth of the plants, which is the outcome that is being measured. An extraneous variable would be a variable that could potentially affect the results of the study but is not being intentionally manipulated by the researchers, such as the temperature or humidity in the two rooms. A placebo would be a fake treatment or intervention that is given to a control group in order to test the effectiveness of a real treatment or intervention in the experimental group.

Researchers Who Were Studying Plant Growth Raised Plants in Two