What it measures
Dividend yield is annual dividend per share divided by current share price, expressed as a percentage. It tells you what cash return a share is currently paying out, separate from whatever the share price itself does.
Not every company pays a dividend, and that's a deliberate choice, not a weakness, a fast-growing company reinvesting everything into itself is making a different, equally valid decision. A missing dividend yield gets treated that way here too, excluded from scoring rather than counted as a failure.
A worked example
A share trades at 91.40 and the company paid 3.75 per share in dividends over the last year. Dividend yield: 3.75 / 91.40 ≈ 4.1%.
How Kobo & Cents uses it
Dividend yield is the dividends category on its own. Payment history, whether a company has paid consistently over time, sits alongside it on the stock detail page as supporting context, not folded into this single number.