-Width (width class) is the width of the data on each floor, which is available from the radar floor, all divided by the number of cumulative frequency table or floor, ut sector.
- A broad class (class width) is the width of each layer, which can be obtained from the range divided by the number of layers of frequency distribution table or floor Uttar sector.
- width (class width) is the width of the data in each layer, which can range from divided by the number of layers of all of the frequency or inquire sectors.