In yesterday's Straits Times article about HDB flats being affordable, there was this chart:
It shows household income rising in tandem with HDB prices.
Credit goes to Hazel Poa[Link] for unveiling the trick here. Move the base year around and you get some other interesting graphs, here's one of the graphs generated by Hazel Poa:
Yes, not so "in tandem" if the base year was 2001. In fact only when you choose 1999 to be the base year instead of any other year in the last 10 years, you can show this "in tandem" movement.
Someone dropped a comment to the previous post on the topic to say that using household income is really inappropriate.
Definitions of household income[Wikipedia]
1. The residents of the household do not have to be related to the head of the household for their earnings to be considered part of the household's income
2.That the size of a household is not commonly taken into account in such measures may distort any analysis of fluctuations within or among the household income categories, and may render direct comparisons between quintiles difficult or even impossible.
Using resident (which includes PRs) household income instead of Singaporeans household income takes us even further from the real situation for Singaporeans. The fact is HDB flats are expensive and put Singaporeans in debt for 30 years and that takes away their financial ability to retire properly.