In statistics, which measure of dispersion is not

Solution

• Measures of dispersion:
• Range:  (Max - Min). Highly sensitive to extreme values.
• Variance & Standard Deviation:  Based on squared deviations from the mean. The mean itself is sensitive to outliers, so these measures are also highly affected.
• Interquartile Range (IQR):  Defined as Q3 - Q1 (the range of the middle 50% of the data). Since it only uses the data between the 25th and 75th percentiles, it completely  ignores the values in the lowest 25% and the highest 25% . This makes it a  robust statistic  that is  resistant to the influence of extreme values or outliers .