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Assume that stock market returns do follow a single-index structure. An investment fund analyzes 750 stocks in order to construct a mean-variance efficient portfolio constrained by 750 investments. They will need to calculate ________ estimates of firm-specific variances and ________ estimate/estimate(s) for the variance of the macroeconomic factor.
Eutrophication
The process by which a body of water becomes overly enriched with minerals and nutrients, leading to excessive growth of algae and depletion of oxygen.
Acid Deposition
The settling of acidic components from the atmosphere onto the earth's surface, often as rain, snow, or dust, with potential harmful effects on ecosystems, structures, and health.
Climate Change
Recent changes in the Earth’s climate; evidence suggests that this is primarily due to human influence, including the increased release of greenhouse gases.
Organic Chemicals
Compounds containing carbon that are found in or produced by living organisms.
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