Question

abbey always gets zits on her chin and she cant figure out the best method to get rid of them. she decides to test several products to see which clears her face up fastest: washing with soap and water, washing with an acne face wash from the pharmacy, and washing her face with organic oils. for one week she just washes her face with water. the next week she washes every day with soap and water. the following week she uses the acne wash, and the last week she uses the organic oils. each week she records the number of zits she has on her chin at the end of the day. 1. independent variable: her face 2. dependent variable: the zits 3. hypothesis: washing with the acne face wash will lead to less zits 4. control group: washing her face with water 5. experimental group: washing face with soap and water 6. constants: the day the zits were counted

Explanation:

1. The independent variable is what is changed in the experiment, here different face - washing methods. Saying "her face" as the independent variable is incorrect; it should be the type of face - wash product.
2. The dependent variable is what is being measured, which is the number or presence of zits. Just "The zits" is a bit imprecise; it should be something like "the number of zits on her chin".
3. The hypothesis is a proposed explanation, and this one suggests a relationship between the acne face wash and fewer zits.
4. The control group is the group that serves as a baseline for comparison, here washing with just water.
5. The experimental group involves the tested conditions. In this case, there are multiple experimental groups including washing with soap and water, acne face - wash, and organic oils, not just washing with soap and water.
6. Constants are factors that are kept the same throughout the experiment. Counting the zits at the end of the day is a constant, but there could be others like the time of day, the person (Abbey), etc.

Answer:

1. Incorrect. Independent variable: Type of face - wash product (soap and water, acne face - wash, organic oils).
2. Imprecise. Dependent variable: The number of zits on her chin.
3. Correct. Hypothesis: Washing with the acne face - wash will lead to fewer zits.
4. Correct. Control group: Washing her face with water.
5. Incorrect. Experimental groups: Washing face with soap and water, washing face with acne face - wash, washing face with organic oils.
6. Partially correct. Constants: The time of day the zits were counted, the person (Abbey), etc.