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A pyramid diagram showing the relationship between data, information and knowledge. At the bottom of the pyramid, in the largest segment is ‘data’, in the middle is ‘information’, and at the top of the pyramid, indicating the smallest proportion, is ‘knowledge’. This represents the levels of analysis that evidence is taken through where data has less analysis and complexity than information or knowledge. This also reveals why there is more data (at the bottom of the pyramid) than there is knowledge at the top.