The two-dot plots below compare the forearm lengths of two groups of schoolchildren: Based on visual inspection of the dot plots, which group appears to have the longest average forearm length? 1) Group X, because no child in the group has a forearm length longer than 12 inches. 2) Group X, because four children in the group have the least forearm length of 10 inches. 3) Group Y, because a child in the group the least forearm length of 10 inches. 4) Group Y, because six children in the group have a forearm length longer than 12 inches.