A pictogram shows the frequency of events using pictures. A key that shows what each picture is worth is needed to be able to read a pictogram properly.
Gan ddibynnu ar y canlyniadau, gelli di ddefnyddio siart bar, siart cylch, graff llinell, pictogram, diagram amlder neu ddiagram gwasgariad. Dyma wers yn cynrychioli data mewn pictogram.
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