Summarize data with statistics

1. 1. Understand data types

1.1. Qualitative

1.1.1. Nominal

1.1.2. Ordinal

1.2. Quantitative

1.2.1. Discrete

1.2.2. Continuous

2. 5. Graphical representations

2.1. Boxplot

2.1.1. Outliers

2.2. Histogram

2.2.1. How to read

2.2.2. Bins

2.2.3. Peaks (Distributions)

3. 2. Understand how the data is structured

3.1. Stductured data

3.1.1. Rectancular data

3.1.1.1. Columns

3.1.1.2. Rows

3.1.1.3. Index

3.2. Semi-structured data

3.3. Unstructured data

4. 4. Measures of dispersion

4.1. Range

4.2. Interquartile range

4.3. Variance

4.3.1. Notation (squared sigma)

4.3.2. Formula

4.3.3. Sample/Population

4.4. Standard deviation

4.4.1. Notation (sigma)

4.4.2. Formula

4.4.3. Sample/Population

5. 3. Describe the central tendency of the data

5.1. Mean

5.2. Weighted mean

5.3. Median

5.4. Mode