19.
Explanation
Merits of Range:
1. Simplicity: The range is a straightforward and easy-to-calculate measure of dispersion. It provides a quick and initial sense of the spread in the data.
2. Ease of Interpretation: The range is in the same units as the data, making it easy to interpret and relate to the data values.
Demerits of Range:
1 . Sensitivity to Extreme Values: The range is highly sensitive to extreme values or outliers, which can distort its representation of data variability.
2. Limited Information: The range only considers the difference between the maximum and minimum values and doesn't take into account the entire dataset. It can overlook the distribution of values within the range.