Due to this weakness many researchers dislike the use of stars to indicate significance and prefer a numerical value instead. The lower the significance level, the more conservative the statistical analysis and the more the data must diverge from the null hypothesis to be significant.
However, there is no consistent convention linking a certain number of stars to a significance level (see examples below). Publications should indicate their own definitions of asterisks and error bars in the text but sometimes omit to do so.
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