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A data frame named d.pizza is part of the DescTools package. A statement is missing from the following R code and an error is therefore likely to occur. Which statement is missing?library(DescTools)deliver

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A data frame named d.pizza is part of the DescTools package. A statement is missing from the following R code and an error is therefore likely to occur. Which statement is missing?<br><br>library(DescTools)<br>deliver <- aggregate(count,by=list(area,driver), FUN=mean)<br>print(deliver)<br>






 
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