A Regression Analysis Between Weight (Y in Kg) and Height

question 50

Multiple Choice

A regression analysis between weight (y in kg) and height (x in cm) resulted in the following least-squares line: = -20 + 0.5x. Taking this into consideration, if the height is increased by 1 cm, what does this imply about the change in the weight, on average?

• A) The weight will increase by 1/2 kg.
• B) The weight will increase by 6 kg.
• C) The weight will decrease by 1/2 kg.
• D) The weight will decrease by 20 kg.

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