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
<span>I
hope this helps, Regards.</span>
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Answer:
The perimeter of the square 12√2 inches.
Step-by-step explanation:
See the diagram attached.
From the diagram, ABCD is the square and AC and BD are the diagonals and they intersect at O.
Now, given that, AC = BD = 6 in.
So, from Δ AOB, AO = 3 inches, BO = 3 inches, and AB = a unit (Side of the square)
{Since the diagonals of a square bisect each other perpendicularly}
So, we can write using the Pythagoras Theorem,
AB² = AO² + BO²
⇒ a² = 3² + 3²
⇒ a = 3√2 inches.
Therefore, the perimeter of the square = 4a = 4 × 3√2 = 12√2 inches. (Answer)
