| Person | Most interest in | Age |
|---|---|---|
| Chris | HTML tables | 22 |
| Dennis | Web accessibility | 45 |
| Sarah | JavaScript frameworks | 29 |
| Karen | Web performance | 36 |
| Average age | 33 | |
| Person | Most interest in | Age |
|---|---|---|
| Chris | HTML tables | 22 |
| Dennis | Web accessibility | 45 |
| Sarah | JavaScript frameworks | 29 |
| Karen | Web performance | 36 |
| Average age | 33 | |
Note: Hard to automatically test or detect. Requires a human tester or AI to query all <table> elements and ensure that proper <thead> elements are used instead of <div> elements or otherwise.