$G$ is the centroid of $\triangle ABC.$ $G_1,G_2,$ and $G_3$ are the centroids of $\triangle BCG,\triangle CAG,$ and $\triangle ABG,$ respectively. What is $\dfrac{[G_1G_2G_3]}{[ABC]}?$

Robert plans to make a box-and-whisker plot of the following set of data. 27, 14, 46, 38, 32, 18, 21 find the lower quartile, the median, and the upper quartile of the set? lower quartile: 19.5; median: 29.5; upper quartile: 42 lower quartile: 14; median: 27; upper quartile: 46 lower quartile: 18; median: 27; upper quartile: 38 lower quartile: 16; median: 29.5; upper quartile: 42