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<math>Average Deviation =\sum_{i=1}^{n} \frac{xi-\bar{x}}{n}</math>
<math>Average Deviation =\sum_{i=1}^{n} \frac{xi-\bar{x}}{n}</math>
<math>Average Deviation=\sum_{i=1}^{columns}</math>
*Here <math>xi</math> is the observation.
*Here <math>xi</math> is the observation.