Typically, object names in R do not include colons, so I imagine that you can’t take the mean.
In passing, I’ll note that the margins package works great in many cases, but that it is not actively being developed. You could try the newer marginaleffects package (disclaimer: I am the author). That package allows you to compute marginal effects at the mean (documentation) easily by typing:
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我怀疑该错误是在此行中：
通常，
r中的对象名称不包括结肠，所以我想您不能卑鄙。从总的来说，我会注意到
保证金软件包在许多情况下都可以很好地发挥作用，但是它并未积极开发。您可以尝试较新的marginaleffectspackage ）。该软件包允许您以平均值计算边际效应（I suspect that the error is in this line:
Typically, object names in
Rdo not include colons, so I imagine that you can’t take the mean.In passing, I’ll note that the
marginspackage works great in many cases, but that it is not actively being developed. You could try the newermarginaleffectspackage (disclaimer: I am the author). That package allows you to compute marginal effects at the mean (documentation) easily by typing: