Measures of Dispersion Quiz

The commonly used measures of dispersion include range, variance, standard deviation, and interquartile range.

Measures of dispersion are important in statistics because they provide information on the spread or variability of the data, which helps in understanding the distribution and making comparisons between different data sets.

The interquartile range is calculated as the difference between the third quartile and the first quartile. It represents the spread of the middle 50% of the data, making it a robust measure of dispersion that is less influenced by extreme values.