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.

Which statement about the outlier in the data set is true?

Hugo should not include the outlier because it lessens the effect of showing that sunlight helps plants grow.
Hugo should include the outlier because it shows there is no relationship between hours of sunlight and plant height.
Hugo should not include the outlier because it strengthens the effect of showing that sunlight helps plants grow.
Hugo should include the outlier because it shows there is a relationship between hours of sunlight and the height of the plant.

Answer 1

Answer:

The third statement is correct.

Explanation:

Hugo should not include the outlier because he cannot get a common conclusion that sunlight helps in plants grow.

When outliers are used, Hugo can test only same species of plants.

The presence of outliers indicates either a positive or negative effect of sunlight over plant growth on a same set of plant species.

When outliers are not used, a normal effect of sunlight on plant growth can be determined.

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