Explanation:rowsum compute column sums across rows of a numeric matrix-like object for each level of a grouping variable. 8. Which of the following sets the size of the outer margins for the graph ?
A. par(mfrow=c(nrow,mcol))
B. par(ask=TRUE)
C. par(omi=c(0,0,1,0) )
D. All of the mentioned
Answer:A
Explanation:rowsum compute column sums across rows of a numeric matrix-like object for each level of a grouping variable. 8. Which of the following sets the size of the outer margins for the graph ?
A. par(mfrow=c(nrow,mcol)) B. par(ask=TRUE) C. par(omi=c(0,0,1,0) ) D. All of the mentioned
Explanation:par can be used to set or query graphical parameters. 9. Which of the following function is used for plotting histogram ?