line">\(Y_i\)</span>, where <span class="math inline">\(i\)</span> goes from 1 to <span class="math inline">\(n\)</span>, i.e. all values <span class="math inline">\(Y_1, Y_2, \ldots, Y_n\)</span>:
<span class="math display">\[\sum_{i=1}^n Y_i = Y_1 + Y_2 + Y_3 + \ldots + Y_n\]</span></p>
<p>For the FIFA 2010 World Cup, we have <span class="math inline">\(n=32\)</span> teams, so to compute the mean number of goals scored, we would sum from <span class="math inline">\(Y_1\)</span> (the number of goals score