Calculating total winnings
Now that you have the poker and roulette winnings nicely as named vectors, you can start doing some data analytical magic.
You want to find out the following type of information:
- How much has been your overall profit or loss per day of the week?
- Have you lost money over the week in total?
- Are you winning/losing money on poker or on roulette?
To get the answers, you have to do arithmetic calculations on vectors.
It is important to know that if you sum two vectors in R, it takes the element-wise sum. For example, the following three statements are completely equivalent:
c(1, 2, 3) + c(4, 5, 6)
c(1 + 4, 2 + 5, 3 + 6)
c(5, 7, 9)
You can also do the calculations with variables that represent vectors:
a <- c(1, 2, 3)
b <- c(4, 5, 6)
c <- a + b
This exercise is part of the course
Introduction to R
Exercise instructions
- Take the sum of the variables
A_vectorandB_vectorand assign it tototal_vector. - Inspect the result by printing out
total_vector.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
A_vector <- c(1, 2, 3)
B_vector <- c(4, 5, 6)
# Take the sum of A_vector and B_vector
total_vector <-
# Print out total_vector