Earthquakes A random sample of 42 earthquakes that have occurred between January 2015 and September 2017 was selected and for each earthquake the magnitude of the earthquake and the number of people killed was recorded. The data appear in the scatterplot below. 100 350 300 250 200 150 Number of People Killed 100 50 5 6 8 9 10 100 -150 Magnitude of Earthquake 12 6 points The relationship between the magnitude of the earthquake and the number of people killed is influenced by the country in which the earthquake takes place. Some countries have building codes that produce buildings that better withstand the damage of an earthquake than buildings in some other countries. In this scenario, the country in which an earthquake takes place is which of the following? O Lurking variable O Outlier O Residual O Influential Observation O Extrapolation