By inspection, which line (life expectancy of males or females) appears to have a higher slope?
The line of male life expectancy appears to have a higher slope. • Select two points on each line and estimate the slope using the equation . Show all calculations and be sure to note which points you chose for each line, as an ordered pair. Describe what each ordered pair means. Which line has a higher slope, according to your calculations? Was your guess by inspection correct? Note: It is important to select points that are far apart from each other, but close to the line of best fit in order to accurately estimate slope. Males: Points selected were (2, 72.1) and (19, 76). This means that for boys born two years after 1979 (1981), their life expectancy is 72.1 years whereas the life expectancy for boys born 19 years after 1979 (1998) is 76 years. =~ 0.2294 Females: Points selected were (3, 79.4) and (18, 81.3). This means that for girls born three years after 1979 (1982), their life expectancy is 79.4 years whereas the life expectancy for girls born 18 years after 1979 (1997) is 81.3
