_l 1. Use Least-Squares to t a straight line, 3! = ax + b, to the data. Plot the data and the line. Calculate Rzand comment on the quality of the t. x 2 3 5 3 19 13 yr 2.91 5.19 9.32 19.63 21.2? 23.24 2. Use Least-Squares to t a cu rue, v = egg; to the appropriate transformation of the data. Pl\" the data and the curve. Calculate Rzand comment on the quality of the t. x 9.5 1 1.4 2.3 3 3.6 yr 3.94 2.99| 2.?3 2.54 2.3?r 2.23 3. Use the Ladder of Powers Transformatio'i'ls to determine if a simplefone-term model wouldbe an appropriate t. Which functional form seems best? (You do not have to t the cu rue.) 11123455? 39 19 yr 2.5 E 15.5 34 34.5 119 123.5 253 399.5 592 4. Consider the data below. Construct a divided di erence table and determine if a loworder polynomial would be appropriate as an empirical model. x912345E? y 13 21 3E 23 299 423 999 1325