University of the West of England
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Calculation of Uncertainty (heart rate)
Link to: Video Answer
In a treadmill exercise, an athlete recorded his heart rate, HR (beats per minute), as a function of his rate of oxygen consumption, V ' (ml kg^{-1} min^{-1}) as listed below:
V ' (mL kg^{-1} min^{-1}) |
18.3 |
21.3 |
23.3 |
26.2 |
HR (bt min^{-1}) |
130 |
140 |
150 |
160 |
i) Enter suitable functions and calculations in your spreadsheet to calculate the best-estimate value for V ' when HR = 185 bt min^{-1}.
ii) Enter suitable functions and calculations in your spreadsheet to calculate the following uncertainties in the value of V ' for HR = 185 bt min^{-1}:
· standard deviation uncertainty in V ', u_{V }_{'},
· confidence deviation, Cd_{ V }_{'},
·
confidence interval, CI_{V }_{'}
(assume that HR = 185 bt min^{-1} is an exact value)