what would the independent variable be for Krusty was told that a certain itching powder was the newest, best thing on the market; it even claims to cause 50% longer lasting itches. Interested in this product, he buys the itching powder and compares it to his usual product. One test subject (A) is sprinkled with the original itching powder, and another test subject (B) was sprinkled with the experimental itching powder. Subject A reported having itches for 30 minutes. Subject B reported having itches for 45 minutes.
The independent variable in this experiment would be the type of itching powder used. In this case, there are two conditions: the original itching powder (used on Subject A) and the experimental itching powder (used on Subject B). The independent variable is manipulated by the experimenter to see if it has an effect on the dependent variable, which is the duration of itching. To determine the effect of the independent variable, the experimenter compares the duration of itching for each subject based on the type of itching powder they were exposed to.
