Knowledge Quiz: Lists

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Consider the following list, l1.

$name
[1] "bob"

$age
[1] 25

$height
[1] 180

$eyes
[1] "blue"

Which of the following expressions will change the value of the eyes slot in l1 from “blue” to “green”?

l1$eyes <- "green"l1[4, ] <- "green"l1[4] <- "green"l1[[4]] <- "green"l1$4 <- "green"

• Correct
• Wrong: l1 is a list, so we should not use matrix-style selection.
• Correct
• Correct
• Wrong: There is no slot named “4” in l1.