I could buy a flower seed packet from grocery outlet. I open the packet finding 3 sunflower seeds. 3 sunflower seeds in 3 pots of soil, and planting the other 3 sunflower seeds in 3 pots of sand. I also will water each plant every day and ensure each plant has the same amount of sunlight. Then I can measure the height of the sunflowers after one month.

Question

What are the treatments in your experiment?
The treatment would be the soil or sand the plants grow in.

What is the response variable in your experiment?

The response variable in my experiment is the amount of plant growth

Where in your experiment would random selection occur?
Random selection occurs when the plants are chosen (from the location you are getting your plants from).

Where in your experiment would random assignment occur?
Random assignment occurs when the plants are assigned to solid or sand.

Answer 1

Your experiment has a clear structure, and you've identified the treatments and variables effectively. Let's refine your answers for clarity:

1. Treatments in Your Experiment:

   • The treatments are the two different types of growing mediums: soil and sand.

2. Response Variable in Your Experiment:

   • The response variable is the height of the sunflower plants, which will be measured after one month of growth.

3. Where Random Selection Occurs:

   • Random selection occurs when you choose the 3 sunflower seeds from the seed packet. It ensures that the seeds are representative of the entire batch and helps eliminate bias in selecting seeds.

4. Where Random Assignment Occurs:

   • Random assignment occurs when you assign the 3 seeds to either soil or sand. This process helps ensure that any differences in growth can be attributed to the type of growing medium rather than the inherent characteristics of the seeds.

Overall, you've structured your experiment well, with clear treatments and variables. Remember to take careful measurements and consider other factors that could influence plant growth for the most informative results!