Housework...

Who does more housework, males or females is always a contentious issue. However a recent study in Japan has suggested that married women do 80% of the housework.

Women do more housework.

The results of the survey suggest that over 40% of women are unhappy with their husbands involvement in household chores. The results were collected through a simple survey method.

However, the survey only involved 6409 women. What percentage of Japan's women is that?

What could be the flaw in the data?

Something that could support this article is an OECD report that Japan's men spend the least amount of time on housework (see image below)