Describe Variation across Repeated Readings - Practice 1

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Repeated measurements may differ. The range is the largest reading minus the smallest. A small range describes consistency, not proof that the instrument is correctly calibrated. These are fictional readings.

Worked example

Readings of 8, 10 and 9 units have range 10 - 8 = 2 units. They could still share a measurement bias.

Question 1 Fictional repeated readings in mm are 10, 8, 9. What is their range in mm? Answer

Question 2 Fictional repeated readings in mm are 12, 9, 10. What is their range in mm? Answer

Question 3 Fictional repeated readings in mm are 14, 10, 11. What is their range in mm? Answer

Question 4 Fictional repeated readings in mm are 16, 11, 12. What is their range in mm? Answer

Question 5 Fictional repeated readings in mm are 14, 12, 13. What is their range in mm? Answer