Collect data for GDP and the unemployment rate for OECD economies between 2007 and 2010 from OECD.Stat. Produce a scatterplot of percentage point changes in GDP and the unemployment rate (from peak to trough) over the course of the Great Recession. Answer the following questions:

(a) Describe briefly what the graph shows.

(b) Does the data support Okun's Law (i.e. an Okun coefficient of -0.5 )?

(c) If not, then suggest some factors that might account for the differences in Okun coefficients observed across the OECD economies.