Cardiorespiratory fitness is widely recognized as a major component of overall physical well-being. Direct measurement of maximal oxygen uptake (VO2max) is the single best measure of such fitness, but direct measurement is time-consuming and expensive. It is therefore desirable to have a prediction equation for VO2max in terms of easily obtained quantities. A sample is taken and variables measured are age (years), time necessary to walk 1 mile (mins), and heart rate at the end of the walk (bpm) in addition to the VO2 max uptake. The equation from a multiple regression is (V02) = 0.01(age) - 0.032(HR) + 0.002*(time) + 5.305. If a person is 34 years old, has a heart rate of 107 bpm, a walking time of 14 minutes, and a maximum oxygen intake of 21.252 L/min, the residual would be 19.003. What is the best interpretation of this residual? Question 25 options: 1) The heart rate is 19.003 bpm larger than what we would expect. 2) The heart rate is 19.003 bpm less than what we would expect. 3) The max oxygen intake is 21.252 L/min larger than what we would expect. 4) The max oxygen intake is 19.003 L/min larger than what we would expect. 5) The max oxygen intake is 19.003 L/min less than what we would expect.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Cardiorespiratory fitness is widely recognized as a major component of overall physical well-being. Direct measurement of maximal oxygen uptake (VO2max) is the single best measure of such fitness, but direct measurement is time-consuming and expensive. It is therefore desirable to have a prediction equation for VO2max in terms of easily obtained quantities. A sample is taken and variables measured are age (years), time necessary to walk 1 mile (mins), and heart rate at the end of the walk (bpm) in addition to the VO2 max uptake. The equation from a multiple regression is (V02) = 0.01*(age) - 0.032*(HR) + 0.002*(time) + 5.305. If a person is 34 years old, has a heart rate of 107 bpm, a walking time of 14 minutes, and a maximum oxygen intake of 21.252 L/min, the residual would be 19.003. What is the best interpretation of this residual?

Question 25 options: