How to use:
- Enter class intervals in the first text area (comma separated, e.g., 0-10, 10-20)
- Enter corresponding frequencies in the second text area (comma separated, e.g., 5, 10)
- Click the Calculate button to see the results
- The table will show class intervals, frequencies, and cumulative frequencies
- The median and mode will be calculated and displayed with step-by-step explanations