Suppose you have three cross-sectional data sets on car prices for the years 2002 and 2004 (one for each of 2002 and 2004) covering the time both before and after the U. S. invasion of Iraq in 2003. You have 90 observations in your data set for 2002 and 120 for 2004. You have decided to pool your 2 cross-sectional data sets together to form one pooled cross-sectional data set. After pooling, you now have total observations in your new pooled cross-sectional data set. What are the primary advantages of pooled cross-sectional data over ordinary cross-sectional data? Check all that apply.

a. Pooling cross sections allows you to form a panel data set.
b. Pooling cross sections allows for a larger sample size.
c. Pooling cross sections allows you to observe changes in key relationships over time.
d. Pooling cross sections allows you to ignore the differences in data over time, since you are left with just one cross-sectional data set.

What is the most direct result of free trade supplying productive resources to areas where they're most needed? a. enhanced efficiency b. lower interest rates c. increasing specialization d. greater competition 2b2t

Recently, verizon wireless ran a pricing trial in order to estimate the elasticity of demand for its services. the manager selected three states that were representative of its entire service area and increased prices by 5 percent to customers in those areas. one week later, the number of customers enrolled in verizon's cellular plans declined 4 percent in those states, while enrollments in states where prices were not increased remained flat. the manager used this information to estimate the own-price elasticity of demand and, based on her findings, immediately increased prices in all market areas by 5 percent in an attempt to boost the company's 2016 annual revenues. one year later, the manager was perplexed because verizon's 2016 annual revenues were 10 percent lower than those in 2015"the price increase apparently led to a reduction in the company's revenues. did the manager make an error? yes - the one-week measures show demand is inelastic, so a price increase will decrease revenues. yes - the one-week measures show demand is elastic, so a price increase will reduce revenues. yes - cell phone elasticity is likely much larger in the long-run than the short-run. no - the cell phone market must have changed between 2011 and 2012 for this price increase to lower revenues.

Bill dukes has $100,000 invested in a 2-stock portfolio. $62,500 is invested in stock x and the remainder is invested in stock y. x's beta is 1.50 and y's beta is 0.70. what is the portfolio's beta? do not round your intermediate calculations. round the final answer to 2 decimal places.