The file NewHomeSales contains the number of new homes sold (in thousands) and the median sales price of new single-family houses sold in the United States recorded at the end of each month from January 2000 through December 2016. Source: Data extracted from bit.ly/2eEcIBR, accessed March 19, 2017. a. Construct a times series plot of new home sales prices. b. What pattern, if any, is present in the data?