The following time-series plot shows the average age at which individuals first marry by gender for each year of the census since 1890.

(a) To the nearest year, what was the average age of a man who first married in 1980?
(b) To the nearest year, what was the average age of a woman who first married in 1960?
(c) In which year was the difference in the average age of men and women at which they first married the largest? Approximately, what is the age difference?
(d) In which year was the difference in the average age of men and women at which they first married the least?

Average Age at First Marriage by Gender 29 - 28 27 26 25 - 24 23 22 - 21 20 + Women Men FOLOZ Fo007 F0661 F0861 FOL6L -0960- F0s61 1940- FoE61 F0761 Fo161 F006 068- Age