THE SCIENTIFIC METHOD



STEP 2: Constructing a Hypothesis

Tip #4:

The hypothesis must address the manipulated
and responding variables

The cause and effect in your hypothesis are related to the manipulated and responding variables in your question. For example, look at this question: "How does the type of music affect a plant's growth?" The type of music can be changed intentionally, so it is the manipulated variable. The plant's growth may change as a result of the type of music, so it is the responding variable. Your hypothesis must include an MV and RV: "I think that if a plant is exposed to classical music (MV), then it will grow very fast (RV)."