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1 of 8 0-day streak

Fit a line of best fit by eye and make estimates

DIFFICULTYintrostandardchallengeexam
Question 1 of 8

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The scatterplot shows paired measurements for floor area and quarterly electricity use

Scatterplot with 12 plotted pairs. The horizontal axis is floor area (m²) and the vertical axis is quarterly electricity use (kWh). The plotted values for floor area run from 89 to 117, and the plotted values for quarterly electricity use run from 1,602 to 1,635. The plotted pairs are (89, 1,602), (91, 1,613), (93, 1,612), (95, 1,607), (97, 1,611), (99, 1,614), (107, 1,617), (109, 1,627), (111, 1,628), (113, 1,629), (115, 1,635), (117, 1,633). A straight line is drawn with slope 1 and intercept 1516.901001101,6001,6101,6201,630floor area (m²)quarterly electricityuse (kWh)

The plotted values for floor area run from 89 to 117. The plotted values for quarterly electricity use run from 1,602 to 1,635

(a)1 mark

For this estimate, use the fitted line through (101, 1,617) and (105, 1,621). Estimate the response value from the scatterplot and its line. The given floor area is 97 m². Round your estimate to a whole number of the displayed units

(b)1 mark

Classify the estimate and choose the statement about its reliability