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. The three basic data types are numerical, characters, and logics. The decimal numbers like 3.1 would be under numerical.

Question 2

What are R’s five most common types of objects? Type your answer below. R’s five most common types of objects are vector, list, factor, data frame, and matrix.

2.a.

Compare vectors and matrices. What are similarities and differences? Type your answer below. Matrices has rows and columns, vectors do not. However, they both have one data types. Vectors has a common element. Matrices has rows and columns with one data type.

2.b

Compare matrices and data frames. What are similarities and differences? Type your answer below. Matrices and data frames have rows and columns. However, data frames has multiple data types and matrices only have one.

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   Mon       1
## 2  Tues       2
## 3   Wed       3
## 4 Thurs       4
## 5   Fri       5

Question 4

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

##    days returns
## 4 Thurs       4
## 5   Fri       5