17. What is meant when a person’s mass is stated as 73.6 kg? That
A. the mass is closer to 73.6 than it is to 73.7 or 73.5
B. the mass is closer to 73.6 than to any other value
C. the mass is between 73.5 and 73.7
D. the mass is 73.6 ± 0.1 kg

18. Which of the following statements applies to the statistic known as the “standarddeviation”?
A. It is a measure of central tendency.
B. It is only applicable to qualitative measurements.
C. Standard deviation is also known as the “variance”.
D. 95 % of all data lie within two standard deviations of the mean.

19. Which of the following units is NOT part of the Australian metric system ofunits?
A. mmHg for measuring blood pressure
B. degree Celsius for measuring temperature
C. Pascal for measuring pressure
D. second for measuring time

20. In the Australian Metric System of units, what does the prefi x micro stand for?
A. one thousand
B. one thousandth
C. one million
D. one millionth

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