provide research and a statistical basis to support the Commissioner’s 5-year reports on the position of the Welsh language and conduct inquiries into any matter of interest to the language
darparu ymchwil ac ystadegau ar gyfer adroddiadau 5 mlynedd y Comisiynydd ar sefyllfa’r Gymraeg a chynnal ymchwiliadau i unrhyw faes o ddiddordeb i’r Gymraeg