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The scatterplot above shows data collect...


The scatterplot above shows data collected on the lengths and widths of Iris setosa petals. A line of best fit for the data is also shown. Based on the line of best fit, if the width of an Iris setosa petal is 19 millimeters, what is the predicted length, in millimeters, of the petal?

A

`21.10`

B

`31.73`

C

52.83

D

55.27

Text Solution

Verified by Experts

The correct Answer is:
C
The given line of best fit can be used to predict the length when the width is known. The equation of the line of best fit is given as y = 1.67x + 21.1, where x is the width in millimeters and y is the predicted length in millimeters. If the width of the petal is 19 millimeters, then x = 19 and y = 1.67(19) + 21.1 = 52.83
Choice A is incorrect and may result from incorrectly using x = 0 in the equation. Choice B is incorrect and may result from neglecting to add 21.1 in the computation. Choice D is incorrect and may result from an arithmetic error.
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