A good place to find 'real' descriptions of graphs and charts is a government statistics website like this one for the UK. If you click on the different themes, you'll see graphs, charts and written summaries of recent statistics for the country.
Here's an example summary from the website:
The employment rate for those aged from 16 to 64 for the three months to June 2012 was 71.0 per cent. This is the highest figure since the three months to May 2009 and it is up 0.4 percentage points on the previous quarter. The number of people in employment aged 16 and over increased by 201,000 on the quarter to reach 29.48 million, the largest quarterly increase since the three months to July 2010. The number of people in employment was 96,000 lower than the pre-recession peak of 29.57 million recorded for March-May 2008.
I've underlined the verbs in the paragraph above. Notice that we tend to use 'easy' verbs when describing statistics.