Summary of Quantitative Relationships

You can find the following excerpt in the book "Show Me The Numbers": Designing Tables and Graphs to Enlighten written by  Stephen Few.

 

 Front Cover

Quantitative Relationships

• Quantitative information consists of two types of data:
• Quantitative 
• Categorical

• Quantitative information always describes relationships
• These relationships involve either
• Simple associations between quantitative values and categorical subdivisions or
• More complex associations among multiple sets of quantitative values.

• There are four types of relationships within categories:
1. Nominal
2. Ordinal
3. Interval
4. Hierarchial
   

• There are three types of relationships between quantitative values
1. Ranking
2. Ratio
3. Correlation 

You can purchase a copy of  "Show Me The Numbers": Designing Tables and Graphs to Enlighten online at the following web address: http://www.amazon.com/dp/0970601972/ref=cm_sw_su_dp