This week we heard that the Australian Bureau of Statistics has chosen 60,000 homes to take part in a test census, to make sure the real event next year runs without incident.

For the first time, it will include questions about sexual orientation and gender for people over 16.

Hari Hara Priya Kannan, Chief Data Scientist for The Demographics Group talks to Sean Aylmer about why we do a census, and what we can expect.