Project 8.1 Percentage Error
1a. Estimate the length of the following horizontal line without
measuring and record your estimate.
1b. Measure the length of the above line in millimetres (to the
nearest millimetre), and record your measured length.
1c. Find the error of your estimate for the length of the line to
the nearest millimetre.
1d. Find the relative error of your estimate relative to the
measurement of the length of the line. Express your answer as a
decimal number.
1e. Find the percentage relative error of your estimate relative to
the measurement of the length of the line.
2a. Estimate the length of the following vertical line without
measuring and record your estimate.
2b. Measure the length of the above line in millimetres (to the
nearest millimetre), and record your measured length.
2c. Find the error of your estimate for the length of the line to
the nearest millimetre.
2d. Find the relative error of your estimate relative to the
measurement of the length of the line. Express your answer as a decimal
number.
2e. Find the percentage relative error of your estimate relative to
the measurement of the length of the line.
3a. Estimate the length of the following oblique (i.e. sloping) line
without measuring and record your estimate.
3b. Measure the length of the above line in millimetres (to the
nearest millimetre), and record your measured length.
3c. Find the error of your estimate for the length of the line to
the nearest millimetre.
3d. Find the relative error of your estimate relative to the
measurement of the length of the line. Express your answer as a
decimal number.
3e. Find the percentage relative error of your estimate relative to
the measurement of the length of the line.
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