Disclaimer: The content of this RMarkdown note came from a course called Introduction to R for Finance in datacamp.

Question 1

What are R’s three most basic data types? Of the three, what would be decimal numbers like 3.1? Type your answer below.

logical

numeric

character

a decimal number such as 3.1 would be numeric

Question 2

What are R’s five most common types of objects? Type your answer below.

vectors, matrices, data frames, factors, and lists

2.a.

Compare vectors and matrices. What are similarities and differences? Type your answer below.

vectors and matrices are similar because they are both data sets the difference is vectors are 1 demensional while matrices are 2 demensional.

2.b

Compare matrices and data frames. What are similarities and differences? Type your answer below.

both are 2 demensional although the difference is data frames can hold more than one data type.

Question 3

Create a vector, “returns”, in place of “ret”; and assign 5 return values, 1 through 5 in place of (5, 2, 3, 7, 8, 3, 5, 9, 1, 4, 6, 3). Create another vector, “days”, in place of “months”; and assign 5 days, Monday through Friday in place of (“Jan”, “Feb”, “Mar”, “Apr”, “May”, “Jun”, “Jul”, “Aug”, “Sep”, “Oct”, “Nov”, “Dec”). Then, create a data frame, “daily_returns”, in place of “monthly_returns” by combining days and returns.

##        Days returns
## 1    Monday       1
## 2   Tuesday       2
## 3 Wednesday       3
## 4  Thursday       4
## 5    Friday       5

Question 4

Subset rows with daily returns greater than or equal to 4%.

##       Days returns
## 4 Thursday       4
## 5   Friday       5