The term "anecdotal evidence" is commonly associated with which type of data?

The term "anecdotal evidence" refers to information or data that is based on personal accounts, stories, or observations rather than systematic research or statistical analysis. It typically reflects individual experiences and opinions rather than objective measurements. This type of evidence is often subjective and may lack the rigor and reliability of other data types, making it more aligned with opinion-based data.

In contrast, quantitative data is characterized by numerical measurements and statistical analysis, structured data follows a predefined format for organization, and scientific data is derived from rigorous scientific methods that prioritize reproducibility and evidence. Therefore, the connection of anecdotal evidence to opinion-based data is appropriate, as both involve individual perspectives rather than universally applicable facts or analyses.