The box-and-whisker plot is an exploratory graphic, created by John W. Tukey, used to show the distribution of a dataset (at a glance). Think of the type of data you might use a histogram with, and the box-and-whisker (or box plot, for short) could probably be useful.
Bar Charts, Frequency Distributions, and Histograms Frequency Distributions, Bar Graphs, and Circle Graphs. The frequency of a particular event is the number of times that the event occurs. The relative frequency is the proportion of observed responses in the category.
Bar graphs measure the frequency of categorical data, and the classes for a bar graph are these categories. On the other hand, histograms are used for data that is at least at the ordinal level of measurement. The classes for a histogram are ranges of values.