A histogram is a graph of data. It compares the distribution or frenquency of different values or ranges of values. In order to draw a histogram, a frequency table is needed.

Two suppliers (A and B) provide disk drives for a computer manufacturer. The manufacturer measures the disk drive opening width to compare the process capabilities of the suppliers and determine ...

Graphs are a useful way to show numerical data. There are a variety of graphs that can help highlight patterns and be used to reach conclusions. Choosing the right graph is very important. Bar charts ...