7. Transforming
par Profesor Magallanes
1. Aggregating
2. Reshaping
2.1. Wide to Long
2.1.1. you avoid missing cells
2.1.2. easier for complex plots and some longitudinal methods
2.2. Long to Wide
2.2.1. easier to compute stats for unit of analysis
2.3. These processes help discover issues
2.3.1. key repetitions
2.3.2. key mistypying
3. Scaling
3.1. different units
3.2. different ranges
3.3. presence of outliers
4. Discretization
4.1. after scaling
4.2. involves decision making
4.2.1. number of bins
4.2.1.1. interpretability