DQ for social research and statistics

A common problem with the use of available data or existing statistics is known as the ecological fallacy. Describe the ecological fallacy and give an example of one such fallacy. Use a different example than anyone else has used in their responses before yours. Discuss any aspects of the definition of an ecological fallacy that you do not understand or that you think another student has misstated or misunderstood. 

does not need to be more than 150 words and no formatting