1. It's important because allows to make sense of data and learn about the conclusions which are obtained.
2. Stage 1: The importance of Statistics
2.1. Lets know reality in an observation or phenomenon
2.1.1. Current situation
2.1.1.1. Complying with what is programmed
2.1.1.2. Below the established
2.1.1.3. Above the established
2.2. Determine what is typical of that observation
2.2.1. Average
2.3. Determine the changes that presents the freak.
2.3.1. Observation of the variations to through time
2.4. Allow relate two or more phenomena
2.4.1. Valid relationship between two characteristics
2.5. Determine the causes originate the phenomenon
2.6. Allows to do estimates on the behavior future of the phenomenon
2.6.1. Multi-year projections
2.7. Allows to do conclusions from a sample
2.7.1. Its conclusions can be extended to a population.
3. Distributions grouped in intervals
3.1. Histograms
3.2. Cumulative polygons of frequencies
4. Stage 2: Tools for problem solving and decision making.
4.1. Statistical method
4.1.1. Statistics descriptive
4.1.1.1. Gather
4.1.1.2. Watch
4.1.1.3. Arrange
4.1.1.4. Sort out
4.1.1.5. Quantify
4.1.1.6. Present and simplify
4.1.1.6.1. Chart
4.1.1.6.2. Graphics
4.1.2. Inference Statistics
4.1.2.1. Analysis of data
4.1.2.2. Search for existing relationships
4.1.3. Process of Elaboration Statistics
4.1.3.1. 6 stages
4.1.3.1.1. Planning
4.1.3.1.2. Collection
4.1.3.1.3. Criticism and Codification
4.1.3.1.4. Data processing
4.1.3.1.5. Analysis and Interpretation
4.1.3.1.6. Publication
5. Distributions not grouped in intervals
6. Stage 3: Tools for Analysis and Interpretation of results
6.1. Qualitative Variables (Attributes)
6.1.1. Sector diagrams
6.1.2. Bar Charts
6.1.3. Pareto chart
6.1.4. Cartograms and Pictograms
6.2. Quantitative Variables
6.2.1. Dot plots
6.2.2. Bar charts
6.2.3. Frequency polygons
6.2.4. Stem and leaf plot
7. Stage 4: Conceptos Básicos dela Estadística Descriptiva
7.1. Descriptive statistics
7.2. Population
7.2.1. set of elements that have a certain characteristic
7.3. Sample
7.3.1. Subset of the population
7.4. Statistical Variable
7.4.1. Character or statistical phenomenon that can be expressed in values numeric.
7.5. Statistical Unit
7.5.1. Each of the elements that are part of the population