Explain why each of the following findings from correlational studies is an example of “correlation does not equal causation.” Suggest at least one possible alternative explanation for each of the findings (i.e., identify a third variable and explain how it is linked to both variables). 

1.In large urban areas, more violence is reported on days with high ice-cream sales.
2.Children with larger feet spell better.
3.In areas of the South, counties with higher divorce rates generally have lower death rates.
4.Nations that add fluoride to their water have a higher cancer rate than those that do not add fluoride.

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