In regards to data analysis questions, where a graph or some data is provided, is there any specific way to structure your answer? especially when it comes to identifying 2 or 3 trends and justifying each trend with data, my answers just become too long 
What i used to say is compare using a
 'higher/lower' word then give the 
stats. Always got full marks. If it's worth two marks, i would put two trends just to make sure you get full marks for that answer 
 
 EG: The life expectancy of women in Japan is 
higher than that of women in Australia with a life expectancy of 
84 years in Japan and 
82 years in Australia. 
Alternatively, the life expectancy of women in Australia is 
lower than that of Japan with respectable ages of 
82 and 84 years. 
Also while talking about this, if you were reading off a graph, ensure to put the full numerical value for example per 100,000 as in an exam you would not get the marks 
