Quartile Deviation
Quartile deviation is half the difference between the third and first quartiles:
$$QD=\frac{Q_3-Q_1}{2}$$
Usage
- Measures the spread of the middle 50% of observations.
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CAT Formulas
Statistics
Quartile Deviation
Quartile Deviation
Quartile deviation is half the difference between the third and first quartiles:
$$QD=\frac{Q_3-Q_1}{2}$$
Usage
- Measures the spread of the middle 50% of observations.
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