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Asked: 2026-05-17T00:16:47+00:00

I’m running cor() on a data.frame with all numeric values and I’m getting this

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I’m running cor() on a data.framewith all numeric values and I’m getting this as the result:

       price exprice...
price      1      NA
exprice   NA       1
...

So it’s either 1 or NA for each value in the resulting table. Why are the NAs showing up instead of valid correlations?

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1 Answer

  1. Editorial Team

    The 1s are because everything is perfectly correlated with itself, and the NAs are because there are NAs in your variables.

    You will have to specify how you want R to compute the correlation when there are missing values, because the default is to only compute a coefficient with complete information.

    You can change this behavior with the use argument to cor, see ?cor for details.

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