Question

Hugo recorded the height of each plant after he exposed each plant to a set amount of sunlight daily. The scatterplot shows his results after 2 weeks of exposing each plant to a set amount of sunlight.

Answer 1

A is the answer.

Answer 2

Hugo should not include the outlier because it lessens the effect of showing that sunlight helps plants grow.

Explanation:

I think your question is missed of key information, allow me to add in and hope it will fit the original one.

Please have a look at the attached photo.

My answer:

Let analyse all possible answers:

• A. Hugo should not include the outlier because it lessens the effect of showing that sunlight helps plants grow.

True, because the height of the plant in the outlier point is shorter than the average so it lessens the effect of showing that sunlight helps plants grow.

• B. Hugo should include the outlier because it shows there is no relationship between hours of sunlight and plant height.

Wrong, even he includes the outlier, it can not be the major reason in explaining the relation between hours of sunlight and plant height.

• C. Hugo should not include the outlier because it strengthens the effect of showing that sunlight helps plants grow.

Wrong, as analysed in the answer A.

• D. Hugo should include the outlier because it shows there is a relationship between hours of sunlight and the height of the plant.

Wrong, as analysed in the answer B

=> we choose A

Hope it will find you well.