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.

  1. Numeric: Numbers -Would be decimal numbers like 3.1
  2. Charector: Texts
  3. Logical: TRUE, FALSE

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.

A vector is a collection of data thats the same type ex. stock price. A matrix is the same as a vector except it has rows and colums.

2.b

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

A matrix is a collection of data that is the same type with rows and colums, a data fram is the same except it has the flexibility of having different types of data in each column.

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 return
## 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 return
## 4 Thursday      4
## 5   Friday      5