10. The following table shows the average monthly distance travelled (in Billions of Miles) by vehicles on urban highways for ve different years. Urban Highways - Average Monthly Distance Travelled by Vehicles (Billion Miles) Years Jan I eh I ar A - r I : Jun ul Au Se - Oct I ov II c Year 1 4.22 5.32 5.21 5.12 . .92 4.49 . .55 4.49 . .44 . .39 a3? . .35 Year 2 4.31 5.44 5.34 5.24 . .98 4.59 . .68 4.65 . .61 . .68 1.74 '.79 Year 3 4.38 5.51 5.41 5.36 . .98 4.63 1.71 4.78 . .82 . .88 . .85 . .89 Year 4 4.45 5.59 5.5 5.41 5.01 4.72 1.78 4.79 . .82 . .92 5.06 5.11 Year 5 4.51 5.65 5.62 5.49 5.12 4.8 . .88 4.82 . .95 5.12 5.22 5.44 a. Use Excel to create sparklines for the average monthly vehicle distance travelled each year. b. Which year has decreasing trend of the average distance travelled? Which year has increasing trend of the average distance travelled? c. Use Excel to create a heat map for the average distance travelled by vehicles. Do you nd the heat map or the sparklines to be better at communicating the trend of the average vehicle distance travelled over different years? Why