Researchers Investigating the Association Between the Size and Strength of Muscles

question 122

Essay

Researchers investigating the association between the size and strength of muscles
measured the forearm circumference (in inches) of 20 teenage boys. Then they measured
the strength of the boys' grips (in pounds). Their data are plotted.
a. Write a few sentences describing the association.
b. Estimate the correlation. $r =$ __________
c. If the point in the lower right corner (at about 14" and 38 lbs.) were removed, how would
the correlation become stronger, weaker, or remain about the same?
d. If the point in the upper right corner (at about 15" and 75 lbs.) were removed, would the
correlation become stronger, weaker, or remain about the same?

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Definitions:

Inventory Turnover

A measure of how many times a company's inventory is sold and replaced over a period.

Days' Sales Uncollected

A financial metric that measures the average number of days it takes a company to collect payment after a sale has been made.

Days' Sales In Inventory

A financial metric that estimates how many days it will take to sell the entire inventory, indicating the liquidity of inventory.

Profit Margin

A financial metric that measures the extent to which a company or business activity makes money, expressed as a percentage of revenue.