Question: 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?
- `attach(d.pizza)`
- `summarize(deliver)`
- `mean <- rbind(d.pizza,count)`
- `deliver[!complete.cases(deliver),]`
Answer: The correct answer of the above question is Option A:`attach(d.pizza)`