Data Encoding, Converting "Blue", "Sky Blue" and "Navy Blue" into "Blue", Assigning categories numerical codes, Standardising text entries, Creating consistent data formats, Missing Value Imputation, Filling blank cells, Using averages to estimate values, Completing incomplete records, Using existing data to infer missing information, Extreme Value Removal, Removing a classroom temperature of 150°C, Deleting physically impossible values, Eliminating faulty sensor readings, Removing obvious anomalies, Noise Removal, Removing a sudden 10°C reading from an otherwise stable pattern, Smoothing inconsistent readings, Eliminating temporary sensor glitches, Correcting random tracking errors

6.2 Data Processing Group Sort

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