MATH 1281 - AY2021-T4  Final Exam (Days 1 - 4)  Review Quiz

Completed on Saturday, 29 May 2021, 1:08 PM Time taken 5 secs Marks 12.00/77.00 Grade 15.58 out of 100.00 Information The data set "" was introduced in Chapter 9 of the book. This data set contains information on various models of cars. Download this le to your computer and store it in the working directory of R. The le can be downloaded from MATH 1281 Data Files in the course page for MATH 1281. The variable "width" in the data set contains the width of the body of the car in inches. The variable "length" contains the length of the body of the car in inches. Produce a new variable by the name "area" that contains the area of the body of the car. This variable should be produced by multiplying the the width of the body by the length of the body. Answer the following questions with respect to the variable "area": Question 1 Incorrect Mark 0.00 out of 1.00 The variable "area" is a: Select one: a. Numeric b. Factor Upload the le "" to a data set by the name "cars" using the code: cars - ("") . Form the variable "area" using the code: area - cars$length*cars$width . The variable "area" is a product of two numeric variables and it obtains numeric values as well. The correct answer is: Numeric H