cumulative-sum.R

# Create sample data with 5 rows and 2 columns
data <- data.frame(a = c(1, 2, 3, 4, 5),  # First column values are 1 to 5
                   b = c(6, 7, 8, 9, 10)) # Second column values are 6 to 10

# Compute cumulative sum of second column
cumulative_sum <- cumsum(data$b)

# Add cumulative sum as a new column to the data frame
data$cumulative_sum <- cumulative_sum

# Print the result
print(data)

##   a  b cumulative_sum
## 1 1  6              6
## 2 2  7             13
## 3 3  8             21
## 4 4  9             30
## 5 5 10             40