In the example, the modal value 15, occurs three times.
From the en.wikipedia.org
Convergent sampling is not an abstruse point because probability distributions can differ in shape and modal value, when sampling is convergent as opposed to non-convergent.
From the nature.com
In any voting system where a plurality determines victory, a single modal value determines the victor, while a multi-modal outcome would require some tie-breaking procedure to take place.