Morphine was the first single-substance drug to be derived from a plant, in this case from the resin of the opium poppy (Papaver somniferum) by a German pharmacist named Setru â¦ rner, in 1803-1805. It was first sold commercially by Heinrich Merck in the 1820's.
1 To find percentiles outside of this range, use the PERCENTILE.INC function. The syntax on this function is exactly the same as for the PERCENTILE.EXC function.  If you will need this worksheet to run on versions of Excel prior to 2007, use PERCENTILE instead of PERCENTILE.EXC or PERCENTILE.INC.
Between them, they divide the data into 5 equal parts or fifths. Quintiles are not that commonly used. Decile. Obviously, the fifth decile is the median, as it is the middle value in the data set. Also, the third decile splits the data set into the lower 30% of values and the upper 70% of values, and so on.There are 99 percentiles in the data set.uartiles, quintiles, deciles, and percentiles. Quartile. You should note that Q 1 effectively splits the data set into the lower 25% of values and the upper 75% of values, whereas Q 3 splits the data into the lower 75% of values and the upper 25% of values.