Which of the following represents time-series data?
a. The length of time each of the top 100 stocks have been available on the NYSE.
b. The most popular time of year that people purchase the top 100 stocks on the NYSE.
c. The value of the 1 stock on the NYSE each month over a one-year period.
d. All of these choices are true.
Q. 2Forty-one individuals from a random sample of 60 indicated they oppose legalized abortion. We are interested in determining whether or not there is a significant difference between the population proportions of opponents and proponents of legalized abortion. The conclusion is that there _____.
a. is no significant difference between the population proportions
b. is a significant difference between the population proportions
c. could be a difference in population proportions, depending on the sample size
d. None of the answers is correct.
Q. 3The goal programming problem with the objective function min P1(d1+) +P2(d2-) is initially solved by the computer and the objective function value is 0 . What constraint should be added for the second problem?
a. d1+ = 0
b. d1+ + d2- = 0
c. -d1+ + d2- = 0
d. d1+ 0
Q. 4Observations that are measured at the same time represent what type of data?
a. Time-series data
b. Cross-sectional data
c. Synchronous data
d. None of these choices.
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