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?
Submit
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?
Submit
1 answer:
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.
Data Set’s
Resting Heart Rate
Heart Rate After Walking One Mile
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hope this helps, Regards.</span>
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SOLUTION
Let us use a simple diagram to interprete the question
In the diagram above, the dark stuff below represents the shadow and the rectangular bar represents the building. I have labelled the height of the building as h.
So we will use the right-angled triangle formed to find h
As we can see h represents the opposite side and 56.5 feet represents the adjacent side of the right-angle triangle. So we will use TOA
So we have
Hence the answer is 104.9 feet to the nearest tenth
