Transforming Structure

1. RESHAPING

1.1. Long to Wide

1.1.1. easier to compute stats for unit of analysis

1.2. Wide to Long

1.2.1. you avoid missing cells

1.2.2. easier for complex plots and some longitudinal methods

1.3. These processes help discover issues

1.3.1. key repetitions

1.3.2. key mistypying

2. AGGREGATING

2.1. Data

2.1.1. Purpose

2.1.1.1. simplify

2.1.1.2. summarize

2.1.2. Elements

2.1.2.1. Grouping

2.1.2.1.1. Categorical / Discrete

2.1.2.2. Apply

2.1.2.2.1. Function

2.1.2.3. Input

2.1.2.3.1. Variable