Suppose the following table gives the median age at their first marriage of women in a certain country for some selected years. Complete parts (a) hrough (e). Year Age 1940 1950 1960 1970 1980 1990 2000 2010 22.9 20.3 21.8 22.2 20.7 20.1 24.4 26.1 o o OB. If the points on the graph be better. G CELLO UC Q C.D. (b) Would a linear or quadratic function best model this data? Explain. What is the key property of the data points that can be used to decide whether a linear or quadratic model should be used? Q E then a linear model would be better. Otherwise, a quadratic model would