The side-by-side boxplots show the cumulative college GPAs for sophomores, juniors, and
seniors taking an intro stats course in Autumn 2003. 
a. Which class (sophomore, junior, or senior) had the lowest cumulative college GPA?
What is the approximate value of that GPA?
b. Which class has the highest median GPA, and what is that GPA?
c. Which class has the largest range for GPA, and what is it?
d. Which class has the most symmetric set of GPAs? The most skewed set of GPAs?
Definitions:
Net Working Capital
The disparity between a company's immediate assets and immediate liabilities, showcasing its short-term economic well-being.
Straight-Line Depreciation
An accounting method that allocates the cost of a tangible asset evenly over its useful life.
Variable Cost
Outlays that shift in alignment with the quantity of output generated.
Discount Rate
The interest rate used to discount future cash flows of a financial instrument back to their present value, thus reflecting the cost of capital.
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