What concept helped Robert Engle win the Nobel Prize for economics in 2003 and what was its basic tenant?

What will be an ideal response?

The ARCH model of price movements showed how volatility changed. While price movements are random, the volatility of a particular stock tends to cluster around high and low levels of volatility. High volatility was followed by high volatility and low volatility was followed by low volatility.

Business

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The statement of cash flows reports only the cash effects of operations during a period and financing transactions.

a. true b. false

Business

A marketing researcher feels that her job is becoming more and more challenging. All of these factors could make the job of a marketing researcher more challenging, EXCEPT:

a. people are using gatekeeper technologies more extensively. b. newer technologies are radically changing the way marketing research information is collected, processed, and distributed. c. the marketing researcher's firm has recently ventured into several foreign markets. d. advances in statistical software have made it difficult to do data analysis. e. marketing research is playing a more important role in strategy development.

Business