The first graph is misleading. The proper metric is the proportion of fraud/error/duplication among all articles, or alternatively the proportion of scientists who have been accused of fraud/error/duplication at least once.
The second graph is better, except it's unclear if the vertical axis means, e.g., 0.005% or 0.5%.
Neither graph indicates its origin, the population of articles studied, or anything else I could use to evaluate them.
The vertical axis on the second graph specifies that it's in percent, on the label, so that would at least be 0.005%.
From Gene Expression by Razib Khan who some of you may also know from the old gnxp site or perhaps from his BHTV debate with Eliezer.
Link to original post.