Listed below in order by row are the annual high values of the Dow Jones Industrial Average for each year beginning with 1980. 1000 1024 1071 1287 1287 1553 1956 2722 2184 2791 3000 3169 3413 3794 3978 5216 6561 8259 9374 11568 11401 11350 10635 10454 10855 10941
a. What is the best predicted value for the year 2013? Hint: Find the equation for the best fit line.
b. Explain why your predicted value may turn out much different from the actual value.