What do waterfalls have to do with data visualization?
A waterfall graph, otherwise known as a cascade chart, may mean very little to those of us from outside the financial services industry.
How to boost a decision tree algorithm
The decision tree is a popular and effective algorithm used primarily in classification work, but it also serves well in predicting quantitative phenomena.
Data sourcing: pros and cons of desk research
Both business and science undertake research to survive and thrive. It is invariably a complex process that requires not only knowledge but also experience.
SNA or network as an analytical object
Today, we will look into Social Network Analysis (SNA), or Social Relation Analysis.
When letters count in a table
A common task analysts are often faced with is to establish whether there are any relationships between variables and, if there is a, what is the nature of the relationship.
Three ways to perceive reliability
When measuring a phenomenon, you need to select the right tool. To measure temperature, you use a thermometer; alcohol content in breath is measured with an alcometer; and weight,...
Trees that grow from tables
When stepping outside the domain of distributive and descriptive statistics for individual variables, we usually take interest in correlations between variables.
Multiple choice: which percentage base to use?
Multiple choice questions where the respondent may select more than one answer are commonly used in surveys. How should the responses to such questions be presented in a table? In...
Cross-selling and tables
What combination of products frequently end up in a shopper's basket? What services are usually bought together by consumers?