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Which of the following statement find cases with no missing values?

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Which of the following statement find cases with no missing values?

(a) complete  <-  subset(data.df,complete.cases(data.df)

(b) complete  <-  sub(data.df,complete.cases(data.df)

(c) complete  <-  subset(data.df,completeall.cases(data.df)

(d) new <- old[n1:n2,n3:n4]

I had been asked this question by my college professor while I was bunking the class.

The origin of the question is Commands in portion Commands, Packages, Visualizing Data and Linear Regression of R Programming

1 Answer

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Right option is (a) complete  <-  subset(data.df,complete.cases(data.df)

To explain: new <- old[n1:n2,n3:n4] select the n1 through n2 rows of variables n3 through n4.

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