Answer:
1. The actual height is the measured height. Therefore the doctor's measurement should be considered the actual height as the doctor measured the height of Clare's brother.
2. The error is the difference between the estimated height and the measured height:
⇒ 4 ft 2 in - 4 ft = 2 inches
3. First convert 4 ft 2 in into inches.
Given 1 ft = 12 inches
Therefore, 4 ft 2 in = 4 x 12 + 2 = 50 inches
[tex]\mathsf{percentage\ error=\dfrac{difference\ between\ actual\ and\ estimated\ value}{actual\ value}\times100\%}[/tex]
[tex]\implies \mathsf{percentage\ error=\dfrac{2}{50}\times100\%=4\%}[/tex]
So the error expressed as a percentage was 4% of the actual height.
