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Suggested answer to exercise: Standard deviation of FEV1 data, 2

Question 1: Report these to two decimal places.

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Suggested answer

We have:

Mean = 4.0607

Standard deviation = 0.67153

Variance = 0.451

To two decimal places these are:

Mean = 4.06 L

Standard deviation = 0.67 L

Variance = 0.45 L

Note that I have also given the units (litres).

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Last updated: 16 October, 2006.

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