Determine the best measure of variability. Justify your answer. A box plot has first vertical segment at 1 and second vertical segment at 3 and third vertical segment at 4.5 and fourth vertical segment at 6 and fifth vertical segment at 8. Standard deviation, because the data distribution is skewed IQR, because the data distribution is symmetric IQR, because the data distribution is skewed Standard deviation, because the data distribution is symmetric