Describe Variation across Repeated Readings - Practice 2

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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 16, 13, 14. What is their range in mm? Answer

Question 2 Fictional repeated readings in mm are 18, 14, 15. What is their range in mm? Answer

Question 3 Fictional repeated readings in mm are 20, 15, 16. What is their range in mm? Answer

Question 4 Fictional repeated readings in mm are 18, 16, 17. What is their range in mm? Answer

Question 5 Fictional repeated readings in mm are 20, 17, 18. What is their range in mm? Answer