The heading of this article (14 February 2011) says, "S'pore households' median monthly income rises"
Source: channelnewsasia.com ~ http://www.channelnewsasia.com/stories/singaporelocalnews/view/1110600/1/.html
The journalist used the term "median". However, not everyone understands what 'median' means. For example, your grandparent might not remember what it means.
Explain, in your own words (between 50 to 100 words) what the first 3 paragraphs try to say (about the median). You may include some numbers to help you illustrate your point.