Understanding the relationship between two quantitative
variables is often needed in epidemiology and biostatistics. For
example, a researcher might need to know the relationship between
birth and death rates. Think of an example that’s interesting to
you that concerns the relationship between two quantitative
variables. Describe the issue and clearly identify the
observational units and the two quantitative variables. How could
you illustrate this with a scatterplot? Finally, if a scatterplot
revealed a strong association, is this sufficient statistical
evidence to show cause and effect? Explain your response