The correct option (b) The timing of political events covered by the news which temporarily influenced preferences
The timing of certain campaign events or news stories can usually be detected in poll results. For example, the sharp increases in preferences, as shown in the graph, can be heavily influenced by events covered by the media, such as announcements of vice-presidential picks, the introduction of new public policy proposals, the coverage of political scandal, or, in this case, party conventions.
What is the purpose of polling?In many computer situations, polling may be used to regulate the order of execution or transmission of the components. Polling, for instance, can be used in multitasking operating systems to distribute processor time and other resources among the numerous contending processes.
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A stock has an expected return of 12% and a standard deviation of 20%. Long-term Treasury bonds have an expected return of 9% and a standard deviation of 15%. Given this data, which of the following statements is correct?A. The two assets have the same coefficient of variation.B. The stock investment has a better risk-return trade-off.C. The bond investment has a better risk-return trade-off.D. Both investments have the same diversifiable risk
The two investments have different expected returns and risk metrics, so none of the statements A, B, C, and D are correct.
When looking at investments, it is important to take into account the expected return, standard deviation, and coefficient of variation. The expected return is the average return that is expected over a given period of time. The standard deviation is a measure of how much the actual return deviates from the expected return. The coefficient of variation (CV) is a measure of the risk-return trade-off, calculated by dividing the standard deviation by the expected return and expressed as a percentage.
In this case, the stock has an expected return of 12% and a standard deviation of 20%, which gives it a CV of 167%. The bond has an expected return of 9% and a standard deviation of 15%, which gives it a CV of 167%. As the two investments have the same CV, it is impossible to make a direct comparison of the risk-return trade-off.
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