From the figure, the distributions of the 3 variables, "current age", "age at first", "cohabitation" and "age at first sex" appear to be positively skewed as we can see that the lines in the boxplots are close to the left end. The peaks of the 3 corresponding curves also veer to the left therefore having heavier tails in the right. does this mean that they happen more frequently? or what is the significance