Answer: In order to have an accurate understanding of graphs and statistics presented in the media, it is important to know the source of the data that was used to create the graph. Is it from a reliable source, and how reliable was the survey or device used to gather the data? Sample size, random selection, or qualification of respondents are all factors to be considered. The format of the graph and the scales used may influence how the graph is perceived and interpreted. Is the scale of a histogram exaggerated to minimize or maximize differences in quantities? Are trend lines accurately identified and timelines clearly labeled? The mainstream media does a great service when the statistics are presented clearly and with reliability or “margin of error” percentages stated clearly. There may be distortions, however, especially when there is a political or economic entity influencing a publication. And the reader must be cautious to consider the source and evaluating its truthfulness or bias.
