mple shows how we can use statistics to <em>describe</em> a complex dataset in terms of a much simpler set of numbers; if we had to look at the data from each of the study participants at the same time, we would be overloaded with data and it would be hard to see the pattern that emerges when they are described more simply.</p>
<p>The numbers in Figure <a href="introduction.html#fig:PureDeathSatFat">1.1</a> seem to show that deaths decrease with saturated fat and increase with carbohydrate intake, but we al