Makayla conducted an experiment on the 7th grade class. She took the resting heart rate of 20 of her classmates and then had the
m walk for one mile and took their heart rates again. She used the data that she collected to make the dot plots below. Based on Makayla's data, the mean resting heart rate is 82 beats per minute with a mean absolute deviation of
. The mean heart rate after walking one mile is 96 beats per minute with a mean absolute deviation of
.
From the data, Makayla concluded the students' heart rates had less variability before or after walking one mile?
The
mean absolute deviation will show us on average how far each of all
the data points from the graph that Makayla collected are from the
mean. To calculate it you simply have to use the formula shown in the
attachment. It is very easy but will take you like 5 minutes to
solve. Use it for each data set.