$(2)$ Consider the following $2$ segmentation outputs based on age. Segmentation ONE consists of $2$ clusters$/$segments$/$groups$.$ The average ages in the two groups are $45$ and $65,$ and the standard deviation$/$difference$/$distance between the two segments is $4\mathrm{.}5$ The standard deviations$/$differences$/$distances within each group are $1\mathrm{.}2$ and $1\mathrm{.}7$ respectively. Segmentation TWO also consists of $2$ clusters. The average ages in the two groups here are $15$ and $25,$ and the standard deviation$/$difference$/$distance between the two segments is $2\mathrm{.}7.$ The standard deviations$/$differences$/$distances within each group are $2$ and $2\mathrm{.}2$ respectively. Please comment on each of the above two segmentations. Which one achieves better separation$/$distinctiveness $($non$-$overlapping$),$ and relative homogeneity within a group?