?Which of the following is true of time series data?
A. ?The time series data is easier to analyze than cross-sectional data.
B. ?The time series data are independent across time.
C. ?The chronological ordering of observations in a time series conveys potentially important information.
D. ?A time series data set consists of observations on a variable or several variables at a given time.
Answer: C
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Since the year 2000, the share of the population holding or actively looking for jobs have ________ in the United States:
A. been record high. B. decreased. C. increased. D. remained approximately constant.
An important source of structural unemployment is
A) recessions. B) people looking for the right job decide to change jobs. C) unemployment insurance benefits. D) seasonal variations in aggregate demand.
If the four-firm concentration ratio for the market for pizza is 28 percent, then this industry is best characterized as
A) a monopoly. B) monopolistic competition. C) an oligopoly. D) perfect competition. E) oligopolistic competition.
Moral hazard is a problem for the insurance industry
a. True b. False