Histogram

A histogram is a graphical representation that shows the distribution of data classes or "bins" that fall into various ranges. This histogram have five colorful rectangular bins that establish a relationship between a "number of students " and "exam scores" . It shows how histograms are represented by adjacent rectangles that fill at intervals directly proportional to the frequency of its bins.

http://http://www.google.com/imgres?imgurl=http://media.techtarget.com/digitalguide/images/Misc/iw_histogram.gif&imgrefurl=http://searchsoftwarequality.techtarget.com/sDefinition/0,,sid92_gci330729,00.html&usg=__HB7NfRUGpMOcx3Im2_IYTnlDosg=&h=408&w=350&sz=7&hl=en&start=0&sig2=IobbTzcnwkWim9Uy8jvN6Q&tbnid=UoEt8mY1OqYi4M:&tbnh=131&tbnw=112&ei=0IZOTM2ZA8OB8gaX9sWcAg&prev=/images%3Fq%3Dhistogram%26hl%3Den%26biw%3D1276%26bih%3D579%26gbv%3D2%26tbs%3Disch:1&itbs=1&iact=hc&vpx=382&vpy=86&dur=351&hovh=242&hovw=208&tx=128&ty=128&page=1&ndsp=20&ved=1t:429,r:2,s:0