A scatterplot displays data in form of dots on a graph. Oftentimes these dots are scattered
rather than lined up, so you draw what is called a trend line in order to see
the general direction of the data.
This scatterplot shows the association between egg consumption and colon
cancer mortality in women. The
trend line indicates that with increased egg consumption, colon cancer
mortality in women increases. It
is important to note that this trend line in the scatterplot graph shows a
correlation, but not necessarily a causation. There may be other factors involved in higher colon cancer
mortality besides increased egg consumption.
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