1. The problem is to understand what a class interval is in statistics. 2. A class interval is a range of values used to group data in a frequency distribution. 3. It helps organize data into intervals so we can see patterns or trends. 4. For example, if you have ages of people: 10, 12, 15, 18, 20, 22, 25, 28, 30, you might group them into class intervals like 10-14, 15-19, 20-24, 25-29, 30-34. 5. Each class interval has a lower limit and an upper limit. 6. The width of the class interval is the difference between the upper and lower limits. 7. Class intervals should be mutually exclusive and exhaustive, meaning no overlap and all data included. 8. This helps in creating histograms or frequency tables for data analysis.