Bivariate Data, SM-Bank 013

The scatterplot below plots male life expectancy (male) against female life expectancy (female) in 1950 for a number of countries.

A line of best fit has been fitted to the scatterplot as shown.

State the dependent variable in the graph. (1 mark)
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Determine the age at which males and females have the same life expectancy. (1 mark)
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Show Answers Only

i. \(\text{Male life expectancy}\)

ii. \(\text{Life expectancy the same at 30 years of age.}\)

Show Worked Solution

i. \(\text{Dependent variable}\ \ \Rightarrow \ \ y \text{-axis variable} \)

\(\text{Male life expectancy}\)

ii. \(\text{Life expectancy the same at 30 years of age.}\)