(Data science and visualisation)

Write the following syntax in one script using comments to indicate the question number and turn in your script to the drop box.

1. Define two vectors, a and b, where a=(3, 15, 22, 17) and b=(2, 3). Conduct the following operations and report what you observe as a result:

1. a*b
2. ab
3. a+b

2. In a social survey, there is one variable marital status with 4 elements: single, married, divorced, and widow

1. Create a character vector named marital_status with the above 4 elements
2. Convert the character vector in a) to a factor
3. Convert the factor in b) to a numeric vector

3. a) Create a matrix B

3 4 5 7

-2 6 8 10

12 -3 7 6

b) Show the second column of the matrix

c) Show the element on the first row second column

4. a) Create a data frame

ID	Gender	Age	Diastolic blood pressure	Systolic Blood Pressure	Temperature
A	Male	55	90	130	98.5
B	Female	42	80	111	99.0
C	Male	39	79	115	98.7

b) Add a row where ID=D, Gender=Female, Age=60, DBP=101, SBP=135, Temperature=98.3

c) Add a column named as weight with the values of (155, 121, 147, 112) to the data frame with that row in b) added

d) Find the mean temperature of all four individuals