What are the examples of measure of dispersion?

What are the examples of dispersion measure? Standard deviation, Range, Mean absolute difference, Median absolute deviation, Interquartile change, Average deviation are the examples of measure of dispersion.

What are examples of measures of spread?

Measures of spread include the range, quartiles and the interquartile range, variance and standard deviation.

How are measures of dispersion used in real life?

Measures of Dispersion While measures of central tendency are used to estimate “normal” values of a dataset, measures of dispersion are important for describing the spread of the data, or its variation around a central value. Two distinct samples may have the same mean or median, but completely different levels of variability, or vice versa.

How are measures of dispersion related to central tendency?

They are usually used in conjunction with measures of central tendency such as the mean and the median. These are the range, variance, absolute deviation and the standard deviation. They are important because they give us an idea of how well the measures of central tendency represent the data.

What does a higher value of dispersion mean?

A higher value of dispersion means greater deviation among the observations. In this case, the average is not a good representative and it cannot be considered reliable. Different measures of dispersion provide us data of variability from different angles, and this knowledge can prove helpful in controlling the variation.

Why are measures of dispersion called averages of the second order?

Measures of dispersion are called averages of the ‘second order’ because in precise study of dispersion, the deviations of the size of items from a measure of central tendency are calculated (ignoring the signs) and then these deviations are averaged. This averaged deviation or dispersion is nothing else, but the average of the second order.