A similar logic is applied to bar graphs: If a data series has positive values only, it will get positive error bars which do not “reach into” the bars. Negative data gets negative error bars. If a data series has both positive and negative values, the error bars will point in both directions.
参见Custom error bars in Excel
一般是正的，看是在柱形图的上面还是下面，上面为正，反之。
内容全部来源于网络收集，如有侵权，请联系网站删除：QQ号：24596024