Scatter Plot Project-Alg2Geo
Published on Nov 19, 2015
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PRESENTATION OUTLINE
SCATTER PLOT PROJECT
ASHLEY BRANGERS, CALLIE FREEMAN, JANE HARRIS
"Students at The Ohio State University conducted an experiment in the fall of 1993 to determine if there is a relationship between heart rate before stepping and after stepping. Each subject preformed the activity for three minutes. Subjects were kept on pace by the beat of an electric metronome. One experimenter counted the subject's pulse for 20 seconds before and after each trial."
Photo by srgpicker
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We were required to make a scatter plot of the data previously shown, title our graph, and label the axes.
Photo by CraftyGoat
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Next we drew a line of best fit and found the equation, which is:
y=4/3x-4
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We found the stepping heart rates that our equation predicted from the given resting heart rates;
a. 50 bpm
b. 80 bpm
c. 100 bpm
Photo by John Steven Fernandez
Those stepping rates are;
a. 63 for the 50 bpm
b. 103 for the 80 bpm
c. 129 for the 100 bpm
Photo by Justin in SD
We also found the linear regression line for the data by using our calculators.
The equation of that line is:
y=1.93x-41.05
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Next we found stepping rates using this equation and data from an earlier question. They are;
a. 55 for the 50 bpm
b. 113 for the 80 bpm
c. 152 for the 100 bpm
Photo by Drongowski
