High School graduation rates are a key measure of economic development and potential for economic growth. The data below show the graduation rates and the percentage of children in poverty for each of the states in the U.S. The graduation rate is for the school year 2004-2005 and the poverty data is for 2007. The data is from the U.S. Census Bureau and is reported in the November 24, 2008 issue of Business Week, p 15. Required: 1 Use regression analysis to answer the question whether there might be a causal relationship between poverty level and graduation rates. 2 Critically examine the regression results you have developed. Include in your answer a consideration of the data used and a consideration of potential additional variable that could be used to predict graduation rates