The Period of Variability of a Cepheid Variable Star, Which

question 245

Multiple Choice

The period of variability of a Cepheid variable star, which is easily measured, is directly related to which stellar parameter, thereby providing a reliable method for the measurement of distance to stars?

• A) luminosity
• B) velocity away from Earth
• C) surface temperature
• D) surface magnetic field

Know how the security market line represents the relationship between risk (beta) and expected return and how it aids in determining if an investment is correctly priced.

Understand how to compute the expected return on a portfolio and the role of portfolio weights.

Recognize the importance of the correlation between stocks in a portfolio and its effect on portfolio variance.

Identify and differentiate between systematic (market) risk and unsystematic (unique) risk and their implications for investment decisions.

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Definitions:

Expected Cash Flows

Forecasts of the amounts, timing, and uncertainty of cash receipts and disbursements that a business anticipates.

Annual Rate of Return Technique

A method to estimate the profitability of potential investments by calculating the projected annual rate of return.

Time Value of Money

The concept that money available now is worth more than the same amount in the future due to its potential earning capacity.

Cash Payback

A method of evaluating an investment by determining the amount of time it will take to recoup the initial investment from its cash flows.