What Is True of Spiral Galaxies

question 49

Multiple Choice

What is true of spiral galaxies?

• A)They are much less common at larger redshifts.
• B)They are relatively rare in regions of high galaxy density.
• C)They are only found in the center of rich galaxy clusters.
• D)They have never been seen to have large redshifts.
• E)They evolve from giant ellipticals.

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Definitions:

Global Minimum Variance Portfolio

An investment portfolio that is designed to have the lowest risk (variance) for a given rate of return, by optimizing the allocation of assets.

Correlation Coefficient

A statistic in which the covariance is scaled to a value between −1 (perfect negative correlation) and +1 (perfect positive correlation).

Minimum Variance Portfolio

A portfolio constructed to achieve the lowest possible volatility or variability in returns among a set of potential assets.

Standard Deviation

A statistical measure that quantifies the dispersion or variability of a set of data points or investment returns around their mean (average).