Woman using the Urinella, a type of female urination device, to adapt to standard men's room urinals. A female urination device, female urination aid, or stand-to-pee device (STP) is a device which aids a female to urinate while standing upright. Variations include basic disposable funnels to more elaborate reusable designs. Female urination devices have increased in popularity since the 1990s.
Each of the rectangles in the histogram has a base of 25, and the heights are 3, 7, 8, 10, 1, and 1. Thus the total area of the histogram is 3x25+7x25+8x25+10x25+1x25+1x25=750. We want the value with area 750/2=375 to the right of it and 375 to the left of it.
Depending on the height of the results, the histogram is printed on either a 12% or 24% scale to fit our letter-size report format. The bottom line (horizontal scale) is measured in 1-micron increments (one micron is equivalent to one thousandth of a millimeter or one twenty-five thousandth of an inch). To analyze the micron test report histogram, find the average fiber diameter (AFD), Fiber Diameter in Microns, on the horizontal scale.