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.
At the other end of the scale is the diagram on the right, where the bins are too large, and again, we are unable to find the underlying trend in the data. Histograms are based on area, not height of bars. In a histogram, it is the area of the bar that indicates the frequency of occurrences for each bin. This means that the height of the bar does not necessarily indicate how many occurrences of scores there were within each individual bin.