Federal flood insurance underwritten by the federal government was initiated in 1968. This federal flood insurance coverage has, according to USA Today (“How You Pay for People to Build in Flood Zones,” September 21, 2005), more than tripled in the past 15 years. A file titled Flood contains the amount of federal flood insurance coverage for each of the years from 1990 to 2004.
a. Produce a line plot for these data.
b. Describe the type of relationship between the year and the amount of federal flood insurance.
c. Determine the average increase per year in federal flood insurance.