Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
Bartleby Related Questions Icon

Related questions

bartleby

Concept explainers

Question
[画像:1. Create a vector named x1 which contains a sequence starting at 1 and ending at 8, with each successive element being 1 larger than the other, i.e. (1, 2, 3, 4, 5, 6, 7, 8) 2. Before running the program, explain what will happen if you run the following code: \code{x1 +3} - Now run this program. What happened? What is this an example of? 3. Create an R function called \func{divideBy()}, which takes two arguments, \var{x} and \var {y}. Let \var{x} be the quantity to divide, and let \var{y} be the quantity to divide \var{x} by. Thus, if \var{x} = 3 and \var{y} = 2, the function should return 1.5 4. Can the function created in 3) take vector arguments? Answer this first before running the program, and then experiment in R. 5. The following problem is MUCH easier if you've taken the time to install RStudio. Please use RStudio! Let's make use of an example dataset - the \var{College} dataset from R package \var{ISLR}. If you haven't used this package before, you'll have to install it with \code{install.packages ("ISLR")}. This puts the source, including functions, datasets, and other objects on your computer. You must then load/attach the package into your instance of R, so that you can actually use the package. This is done by typing \code{library (ISLR)} in the console. Now you're ready! The \var {College} variable holds the data frame for the College dataset. Type \code{?College} and hit enter in the console. This will bring up the help page for the \var {College} dataset, that includes descriptions of the variables.]
expand button
Transcribed Image Text:1. Create a vector named x1 which contains a sequence starting at 1 and ending at 8, with each successive element being 1 larger than the other, i.e. (1, 2, 3, 4, 5, 6, 7, 8) 2. Before running the program, explain what will happen if you run the following code: \code{x1 +3} - Now run this program. What happened? What is this an example of? 3. Create an R function called \func{divideBy()}, which takes two arguments, \var{x} and \var {y}. Let \var{x} be the quantity to divide, and let \var{y} be the quantity to divide \var{x} by. Thus, if \var{x} = 3 and \var{y} = 2, the function should return 1.5 4. Can the function created in 3) take vector arguments? Answer this first before running the program, and then experiment in R. 5. The following problem is MUCH easier if you've taken the time to install RStudio. Please use RStudio! Let's make use of an example dataset - the \var{College} dataset from R package \var{ISLR}. If you haven't used this package before, you'll have to install it with \code{install.packages ("ISLR")}. This puts the source, including functions, datasets, and other objects on your computer. You must then load/attach the package into your instance of R, so that you can actually use the package. This is done by typing \code{library (ISLR)} in the console. Now you're ready! The \var {College} variable holds the data frame for the College dataset. Type \code{?College} and hit enter in the console. This will bring up the help page for the \var {College} dataset, that includes descriptions of the variables.
Expert Solution
Check Mark
Knowledge Booster
Background pattern image
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.
Similar questions
    Recommended textbooks for you
    Text book image
    Database System Concepts
    Computer Science
    ISBN:9780078022159
    Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
    Publisher:McGraw-Hill Education
    Text book image
    Starting Out with Python (4th Edition)
    Computer Science
    ISBN:9780134444321
    Author:Tony Gaddis
    Publisher:PEARSON
    Text book image
    Digital Fundamentals (11th Edition)
    Computer Science
    ISBN:9780132737968
    Author:Thomas L. Floyd
    Publisher:PEARSON
    Text book image
    C How to Program (8th Edition)
    Computer Science
    ISBN:9780133976892
    Author:Paul J. Deitel, Harvey Deitel
    Publisher:PEARSON
    Text book image
    Database Systems: Design, Implementation, & Manag...
    Computer Science
    ISBN:9781337627900
    Author:Carlos Coronel, Steven Morris
    Publisher:Cengage Learning
    Text book image
    Programmable Logic Controllers
    Computer Science
    ISBN:9780073373843
    Author:Frank D. Petruzella
    Publisher:McGraw-Hill Education