Given: ΔABC , m∠ACB = 90° ,CD⊥AB, m∠ACD=30°, AD= 6 cm. Find BD.

The major difference is that a histogram is only used to plot the frequency of score occurrences in a continuous data set that has been divided into classes, called bins.  bar charts, on the other hand, can be used for a great deal of other types ofvariables  including  ordinal  andnominal  data sets.