Question

which of the following statement tells the row with the minimum value for every column?

(a) which.min(x)

(b) which.max(x)

(c) z=apply(x,1,which.min)

(d) z=apply(1,1,which.max)

This question was addressed to me during an internship interview.

I'm obligated to ask this question of Commands in division Commands, Packages, Visualizing Data and Linear Regression of R Programming

Answer 1

The correct answer is (a) which.min(x)

The best explanation: which() function gives the TRUE indices of a logical object, allowing for array indices.