Question

1. experimental design classwork

identify the dependent variable (the thing that you observe/keep data on)
krusty was told that a certain itching powder was the new best powder 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 to have itches for 45 minutes.

Explanation:

In this experiment, the dependent variable is what's being observed/measured, which is the duration of itching. The experiment compares the itching time (30 minutes for Subject A, 45 minutes for Subject B) based on the type of powder used. So the dependent variable is the time (in minutes) that the test subjects reported having itches, as it's the outcome being recorded.

Answer:

The dependent variable is the duration of itching (the time the test subjects reported having itches, e.g., 30 minutes for Subject A, 45 minutes for Subject B).