累积频数图显示了来自 ABC 小学的 240 名儿童样本的身高分布。

1. Relate the larger median to the position of the cumulative frequency curve.

For both schools, there are $240$ children, so the median is read at cumulative frequency
$\frac{240}{2}=120.$
A larger median means that, at cumulative frequency $120$, the height for XYZ is greater than that for ABC. Hence the XYZ curve is further to the right.

2. Relate the smaller standard deviation to the spread and steepness of the curve.

A smaller standard deviation means the heights are less spread out about the median. On a cumulative frequency curve, less spread gives a more compressed horizontal distribution, so the curve is steeper.