Introduction to EDRM611
by Raul Lozano

1. Variable
1.1. Nature
1.1.1. Qualitative
1.1.1.1. Nominal
1.1.1.2. Ordinal
1.1.2. Quatitative
1.1.2.1. Interval
1.1.2.2. Ratio
1.2. Handling
1.2.1. Independent
1.2.2. Dependent
1.3. Numbers in scale
1.3.1. Discrete
1.3.2. Continuous
1.3.2.1. Discrete approximations
2. Study
2.1. Population
2.2. Sample
3. Descriptive value
3.1. Parameters
3.1.1. Greek letters
3.2. Statistics
3.2.1. Roman letters