Question

question
the scatter plot and line of best fit below show the length of 7 peoples femur (the long leg bone in the thigh) and their height in centimeters. what is the meaning of the y - value on the line when x = 50?
answer
the height of an actual person with a femur length of 179.4 centimeters is 50
an expected height of 50 centimeters when the femur has a length of 179.4 centimeters

Explanation:

The line of best - fit is used to model the relationship between two variables. Here, the x - variable is the length of the femur and the y - variable is the height. When x = 50, the y - value on the line represents the expected height based on the model (line of best - fit) for a person with a femur length of 50 centimeters. It is not the height of an actual person but an expected value from the model.

Answer:

An expected height of a person when the femur has a length of 50 centimeters.