Please answer the number 1 and number 2: a.) Straight line b.) A Parabolic Curve c. An Exponential function

Please show the solution.

P.S : CURVE FITTING

1. Given the following data: X 1.6 2 2.5 3.2 4 4.5 f(x) 2 8 14 15 8 2 Use the least-squares regression to fit the data to (a) a straight line (b) a parabolic curve (c) an exponential function Here, also plot the functions together with the data on the same graph and compare the squared errors. 2. Repeat prob. 1 for the following world population data: Year 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010 2015 Population 3.34 3.7 4.08 4.46 4.87 5.33 5.75 6.15 6.54 6.96 7.38 [billions]