So, page 8, we had our histogram of the Amount of Sleep for College Students we did a clicker question at the very end where we talked about the shape of that distribution of amount of sleep we talked about it being approximately symmetric and another word that would work would be unimodal one main mode or peak, and then some of you did want to select the skewness aspect it was, it's not perfectly symmetric, a slight skewness to the left, but it's quite slight, 