Week 2 (still, don't worry about rankings)

While doing your R script, be scared of:

• Typos

• Not writing comments

• Giving multiple vectors the same name

• All other options

For the vector: x <- ( 100, 200, 3.00), what output do we expect to see from the command "class(x)"

• Logical

• Character

• Numeric

• Nonsense

Will R interpret the vectors " x <- (1, 2, 3)" and "X <- (1, 2, 3)" as THE SAME vector? A.k.a, it is a SINGLE vector typed twice?

• Yes

• No

• ...maybe?

Lets say you wanna compare vectors named "x" and "y", so you write:

y <- (5 * 1)

x <- (5 * 2)

x <- (1 + 1)

Then:

test <- y > x

Which value will be stored in "test"?

• TRUE

• FALSE

• wat?

Look at this image and take a breather:

• amazing

• I don't like oranges

in R language, what does this mean: <-

• Less or equal

• A backwards sign

• Assign operator

• Assign value

In R language, what does the code " print( "I love R")" do?

• It lies

  (don't chose this option)

• Uses the command "Print" to feed a character string to our output

• Uses the command "Print" to feed a logical string to our output

• Uses the command "Print" to feed a numerical string to our output

Are the vectors below E X A C T L Y the same thing?

x <- ( 1, 2, 3)

x <- ( "1", "2", "3")

• No but don't know why

• Yes

• No, the first is a CHARACTER vector and the second is a NUMERIC vector

• No, the first is a NUMERIC vector and the second is a CHARACTER vector