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Jamel is doing a science experiment for his biology class, where he measures the growth rate of pea plants. He randomly assigns the plants into two groups. He exposes the first group to

6
hours of sunlight per day and the second group to
14
hours of sunlight per day. All other factors, such as the amount of soil, humidity levels, and temperature were the same for both groups.

If the group of plants exposed to 14 hours of sunlight experienced a significantly greater growth rate, what can be concluded about this study?

Responses

There is a weak correlation between the increase in sunlight and increased growth rate.
There is a weak correlation between the increase in sunlight and increased growth rate.

There is a weak causation between the increase in sunlight and increased growth rate.
There is a weak causation between the increase in sunlight and increased growth rate.

There is strong correlation and strong causation between the increase in sunlight and increased growth rate.
There is strong correlation and strong causation between the increase in sunlight and increased growth rate.

No determination can be made without additional information about the exact strain of pea plants used in the experiment.

1 answer

Based on the information provided, the most accurate conclusion regarding the study is:

There is strong correlation and strong causation between the increase in sunlight and increased growth rate.

This conclusion is drawn from the fact that Jamel controlled other variables and only changed the amount of sunlight exposure between the two groups of plants. Since the group exposed to 14 hours of sunlight experienced significantly greater growth compared to the group receiving only 6 hours, it indicates a strong relationship (correlation) and suggests that the increase in sunlight is likely a cause of the increased growth (causation). However, it's important to note that in real-world experiments, there may still be other factors influencing growth that aren't immediately obvious, but based on the information provided, this conclusion is valid.