ng">Parameters:</span></dt><dd><code>weight</code> - Weight of the observed point.</dd><dd><code>x</code> - Abscissa of the point.</dd><dd><code>y</code> - Observed value  at <code>x</code>. After fitting we should
 have <code>f(x)</code> as close as possible to this value.</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../org/apache/commons/math3/fitting/WeightedObservedPoints.html#add(double, double)"><code>add(double, double)</code></a>, 
<a href="../../../../../org/apache/com