An experiment was done on one subject (n=1) in which heart rate, ventilation, blood pressure, oxygen consumption was measure in a 5 minute period of rest, 5 min period of light exercise and 4 min period of recovery.
I graphed heart rate, and the other factors over time and that showed a steady increase.
How do I show (preferably through a graph) a correlation between 2 factors such as oxygen consumption and heart rate?
If I did an x-y scatter plot with oxygen on one axis and heart rate on the other, would this work?
Thank you =)
2007-03-19 10:19:58 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Other - Science
yes that would work. Then if you happen to be using excel or something, try adding a linear trendline (excel - right click on the data points=>add trendline), get it to display the r2 value - this is a measure of deviation from the fit line (1=perfect correlation 0=poor), as a general rule above 0.8 is really good. the equation is useful if you want to predict one variable from the other.
2007-03-19 12:48:10 · answer #1 · answered by Rickolish 3 · 1⤊ 0⤋
Yes, heart rate would be the x value and the oxygen consumtion would be the y value and the x-y scatter plot would show a distinct correlation if it exists. There are some software tools for correlation studies. You could use them too.
2007-03-19 10:51:08 · answer #2 · answered by Swamy 7 · 0⤊ 0⤋