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Download the file e_cigs.csv from eCampus. Open R and change the working directory to be the directory in which you have saved e_cigs.csv. Use the following codes dta <- read.csv(e cigs.csv) dim(dta) head (dta) summary (dta) (a) How many rows does the data object dta (a data frame to R) have? (b) How many columns does dta have? (c) Which of the following statements is true? 团 The columns correspond to the individuals, and the rows correspond to variables. The rows correspond to the individuals, and the columns correspond to variables.

math   Statistics-And-Probability   
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Answer #1

Since You have not provided the excel file

Here is code, just run and get the answer

a)

nrow(dta)

b)

ncol(dta)

c)

option B) is correct

rows - individuals

column - variables

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