Selecting Among the Quartile Deviation-ECO6416

# Selecting Among the Quartile Deviation-ECO6416 - Selecting...

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Selecting Among the Quartile Deviation, Mean Absolute Deviation, and Standard Deviation A general guideline for selecting a suitable statistic in describing the dispersion in a population includes consideration of the following factors: 1. The concept of dispersion required by the problem. Is a single pair of values adequate, such as the two extremes or the two quartiles (range or Q)? 2. The type of data available. If they are few in numbers, or contain extreme value, avoid the standard deviation. If they are generally skewed, avoid the mean absolute deviation as well. If they have a gap around the quartile, the quartile deviation should be avoided. 3. The peculiarity of the dispersion measures themselves. These are summarized under “The Main Characteristics of the Quartile Deviation, the Mean Absolute Deviation, and the Standard deviation" below. The Main Characteristics of the Quartile Deviation, the Mean Absolute Deviation, and the Standard Deviation Fact No. The Quartile Deviation

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Selecting Among the Quartile Deviation-ECO6416 - Selecting...

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