The density curve in the given figure is called a uniform density curve. the vertical axis shows points marked at one-sixteenth and one-eighth height. the density curve shows a single uniform bar rising to the height of the notation on the vertical axis. because of the ease of computing areas under this density curve, it allows many computations to be done by hand. (a) what is the mean of the density curve? 16 4 8 3.5 what is the median of the density curve? 2.5 6 3 4 (b) what are the first and third quartiles? the first quartile is 2 , and the third quartile is 6 . the first quartile is 4 , and the third quartile is 8 . the first quartile is 6 , and the third quartile is 2 . the first quartile is 3 , and the third quartile is 7 .