Question

Annotation of plots in any plotting system involves adding points, lines, or text to the plot, in addition to customizing axis labels or adding titles. Different plotting systems have different sets of functions for annotating plots in this way. Which of the following functions can be used to annotate the panels in a multi-panel lattice plot?

(a) points()

(b) panel.abline()

(c) lines()

(d) axis()

This question was addressed to me during an internship interview.

My question is from Exploratory Data Analysis topic in portion Profiling, Simulation and Data Analysis of R Programming

Answer 1

Correct option is (b) panel.abline()

The explanation: panel.abline() is one of the most used panel function.