You are analyzing financial data with R. The variable data is a vector containing the amount of money in several bank accounts in 2020. Your friend mentions that all accounts received a $1,000 stimulus check during the pandemic. How can you update the existing variable?

Question

BlackTom AI · Accepted Answer

We’re working with a vector of monetary balances and want to reflect each account receiving a $1,000 stimulus by updating the existing variable in place.
Option 1: 'data = data + 1' would add 1 to each element, not 1000, so this does not represent the stimulus amount.
Option 2: 'data2 = data + 1000' creates a new variable data2 containing the original data plus 1000, but it does not update the existing data vector in place, which fails to meet the requirement of updating the existing variable.
Option 3: 'data = data + 1000' adds 1000 to every element of data, correctly reflecting the stimulus across all accounts and updating the original variable directly.
Option 4: 'data2 = 1000 * data' scales each balance by 1000, which is far larger than a $1,000 addition and does not represent a fixed stimulus amount.
Option 5: 'data = 1000' replaces the entire vector with a single value of 1000, losing the individual account amounts and not applying a uniform $1,000 addition to each account.
In summary, only the third option accomplishes the intended in-place update by adding exactly 1000 to every element of the existing vector, while the others either add a different amount, create a new variable, apply a scaling factor, or overwrite the data inappropriately.

ECON3310001.1251 Quiz 1: Introduction to Programming

You are analyzing financial data with R. The variable data is a vector containing the amount of money in several bank accounts in 2020. Your friend mentions that all accounts received a $1,000 stimulus check during the pandemic. How can you update the existing variable?

View Explanation

Log in for full answers

Similar Questions

In a consumer society, many adults channel creativity into buying things

Economic stress and unpredictable times have resulted in a booming industry for self-help products

People born without creativity never can develop it

A product has a selling price of $20, a contribution margin ratio of 40% and fixed cost of $120,000. To make a profit of $30,000. The number of units that must be sold is: Type the number without $ and a comma. Eg: 20000

Which of the following statement regarding cost is correct:

Under the assumptions used in cost-volume-profit analysis, as the activity increases:

The CVP and break-even analysis are supported by a range of important assumptions. Which of the following is not an assumption of the CVP:

The break-even point is that at which:

More Practical Tools for Students Powered by AI Study Helper

Homework AI Solver

Stylized AI Paper Writer

Plagiarism Checker Assistant

Citation AI Academic Writing Tool

In-Class Translation Assistant

AI Note Generator

AI Quiz Answers

Past Exam Questions from University Test Bank

Smart Practice Assistant

Adaptive Practice

Making Your Study Simpler