STA 301 KCs Question and answers
correctly solved 2025/2026
Which of the following statements about course policies on Knowledge Checks (KCs) is accurate? Select
all correct answers. - correct answer ✔-We drop your lowest KC score in calculating your overall KC
average for the semester
-Any requests to drop an additional KC or for an extension must be accompanied with a verification of
absence from Student Emergency Services
-Canvas will save the highest score from your quiz attempts. For example, if you earn 90% on your
second attempt and 84% on your third attempt, Canvas will retain your score of 90%
Students who feel that their homework was not evaluated fairly via the peer grading process will have
an opportunity to appeal. Students who want to appeal a homework grade should do which of the
following? - correct answer ✔Complete the Homework Appeal Survey posted on Canvas within one
week after grades are posted for that homework.
Which of the following statements about course grading policies is accurate? Select all correct answers. -
correct answer ✔-While we reserve the right to lower grade cutoff values (i.e., make them more
generous) at our sole discretion, we will not raise them.
-As with all McCombs classes, course grades are not numerically rounded (e.g., an 89.99 is not rounded
up to 90).
-The cutoff for a B grade is 84%.
Which of the following instructions should students follow for each homework assignment? Select all
correct answers. - correct answer ✔-Upload the homework write-up as a PDF file on the Canvas
assignment page.
-Do not include or re-type the homework assignment questions or instructions in your write-up.
-Save and submit the R script that you created for analysis to complete the homework write-up. The R
script will not be graded, but you must submit the script to receive credit on the write-up.
,Which of the following statements about course policies on Class Participation is accurate? Select all
correct answers. - correct answer ✔-The number of available class participation points for the semester
will not be determined in advance.
-Students who earn 70% of available class participation points will receive full credit on the class
participation portion (5%) of their course grade.
-Class participation points may be earned from in-class activities including polls, reading quizzes, and
short feedback surveys.
Which of the following statements about our course Midterm Exam is accurate? Select all correct
answers. - correct answer ✔-If you don't have RStudio installed and working on your computer, you
will not be able to complete all the questions on the exam.
-You will take the midterm exam using your own computer in our classroom during class.
-The midterm exam will be open-notes and open-book and open-internet.
Match each grade component with the correct percentage weight used to calculate course grades. -
correct answer ✔Class Participation: 5%
Knowledge Checks: 20%
Midterm Exam: 20%
Homework: 25%
Final Exam: 30%
When we calculate your final homework average, how many homework grades do we drop? - correct
answer ✔0
Required materials for this class include which of the following? Select all correct answers - correct
answer ✔-R and RStudio installed on your computer.
-A free online book, "Data Science in R: A Gentle Introduction"
-Chrome or Firefox web browser for working in Canvas, of particular importance during quizzes and
exams.
,-Laptop or desktop computer with modern and updated operating system (MacOS, Windows or Linux).
Which of the following statements about the Final Exam is accurate? Select all correct answers. - correct
answer ✔-The Final Exam must be completed alone. You may not seek or receive aid in answering
questions from any classmate or any other person.
-You will take the final exam using your own computer in the location of your choice.
-If your final exam score is higher than your midterm score, then it will replace your midterm score when
calculating your final course grade.
-The final exam will be open-notes and open-book and open-internet.
Bitcoin is a decentralized digital currency that functions without a central bank. It was first released as
open-source software in 2009. Since then, many of these cryptocurrencies have raised money through
Initial Coin Offerings (ICOs). A data frame gives information on nine ICOs that have raised more than
$100 million. For each ICO, the dataset lists an ID (numbered from 1 to 9), the name of the
cryptocurrency, the location of the ICO, the date of the ICO, the price of Bitcoin on the date of the ICO,
and the amount of funding raised (in millions of U.S. dollars).
Which of the following best represents the cases of this data frame? - correct answer ✔ICOs
Consider the following data frame on five airplane models operated by major commercial carriers.
CaseID Manufacturer Model First flight MaxPassengers
1 Boeing 737 1967 215
2 Boeing 747 1969 605
3 Boeing 787 2009 330
4 Airbus A320 1987 186
5 Airbus A380 2005 853
Which of the following statements about this data frame is/are accurate? Select all correct answers. -
correct answer ✔-"Model" is a categorical variable.
-"First flight" is a numerical variable.
-"CaseID" is a numerical variable.
, -Each case in this data frame corresponds to an airplane manufacturer.
-"Max passengers" is a categorical variable.
-"Manufacturer" is a categorical variable.
Bitcoin is a decentralized digital currency that functions without a central bank. It was first released as
open-source software in 2009. Since then, many of these cryptocurrencies have raised money through
Initial Coin Offerings (ICOs). A data frame gives information on nine ICOs that have raised more than
$100 million. For each ICO, the dataset lists an ID (numbered from 1 to 9), the name of the offered
currency, the location of the ICO, the date of the ICO, the price of Bitcoin on the date of the ICO, and the
amount of funding raised (in millions of U.S. dollars).
Which of the following variables in this data frame is/are numerical? Select all correct answers. - correct
answer ✔-The price of Bitcoin on the date of the ICO
-Amount raised
Match the terms below to their correct definitions. - correct answer ✔-Population: The set of all
possible cases that might have been included in a data set.
-Sample: A specific selection of cases from the population.
-Data frame: A tabular representation of a data set in which the rows correspond to cases and the
columns to variables.
-Code book: A file or separate list that provides all the necessary information to interpret each variable
in a data set
-Unit of analysis: The type of entity you choose to focus on in a data analysis
-Sampling bias: Any systematic discrepancy between a sample and the corresponding population
Which of the following statements about R scripts is/are correct? Select all correct answers. - correct
answer ✔-A script is a file that collects multiple statements (i.e. lines of R code) in a single document.
-Scripts make it simple to save your work and pick up where you left off, without having to remember
what you've accomplished already.
-One way to run R statements from a script is to highlight those statements and then hit Control-Enter
on the keyboard.
correctly solved 2025/2026
Which of the following statements about course policies on Knowledge Checks (KCs) is accurate? Select
all correct answers. - correct answer ✔-We drop your lowest KC score in calculating your overall KC
average for the semester
-Any requests to drop an additional KC or for an extension must be accompanied with a verification of
absence from Student Emergency Services
-Canvas will save the highest score from your quiz attempts. For example, if you earn 90% on your
second attempt and 84% on your third attempt, Canvas will retain your score of 90%
Students who feel that their homework was not evaluated fairly via the peer grading process will have
an opportunity to appeal. Students who want to appeal a homework grade should do which of the
following? - correct answer ✔Complete the Homework Appeal Survey posted on Canvas within one
week after grades are posted for that homework.
Which of the following statements about course grading policies is accurate? Select all correct answers. -
correct answer ✔-While we reserve the right to lower grade cutoff values (i.e., make them more
generous) at our sole discretion, we will not raise them.
-As with all McCombs classes, course grades are not numerically rounded (e.g., an 89.99 is not rounded
up to 90).
-The cutoff for a B grade is 84%.
Which of the following instructions should students follow for each homework assignment? Select all
correct answers. - correct answer ✔-Upload the homework write-up as a PDF file on the Canvas
assignment page.
-Do not include or re-type the homework assignment questions or instructions in your write-up.
-Save and submit the R script that you created for analysis to complete the homework write-up. The R
script will not be graded, but you must submit the script to receive credit on the write-up.
,Which of the following statements about course policies on Class Participation is accurate? Select all
correct answers. - correct answer ✔-The number of available class participation points for the semester
will not be determined in advance.
-Students who earn 70% of available class participation points will receive full credit on the class
participation portion (5%) of their course grade.
-Class participation points may be earned from in-class activities including polls, reading quizzes, and
short feedback surveys.
Which of the following statements about our course Midterm Exam is accurate? Select all correct
answers. - correct answer ✔-If you don't have RStudio installed and working on your computer, you
will not be able to complete all the questions on the exam.
-You will take the midterm exam using your own computer in our classroom during class.
-The midterm exam will be open-notes and open-book and open-internet.
Match each grade component with the correct percentage weight used to calculate course grades. -
correct answer ✔Class Participation: 5%
Knowledge Checks: 20%
Midterm Exam: 20%
Homework: 25%
Final Exam: 30%
When we calculate your final homework average, how many homework grades do we drop? - correct
answer ✔0
Required materials for this class include which of the following? Select all correct answers - correct
answer ✔-R and RStudio installed on your computer.
-A free online book, "Data Science in R: A Gentle Introduction"
-Chrome or Firefox web browser for working in Canvas, of particular importance during quizzes and
exams.
,-Laptop or desktop computer with modern and updated operating system (MacOS, Windows or Linux).
Which of the following statements about the Final Exam is accurate? Select all correct answers. - correct
answer ✔-The Final Exam must be completed alone. You may not seek or receive aid in answering
questions from any classmate or any other person.
-You will take the final exam using your own computer in the location of your choice.
-If your final exam score is higher than your midterm score, then it will replace your midterm score when
calculating your final course grade.
-The final exam will be open-notes and open-book and open-internet.
Bitcoin is a decentralized digital currency that functions without a central bank. It was first released as
open-source software in 2009. Since then, many of these cryptocurrencies have raised money through
Initial Coin Offerings (ICOs). A data frame gives information on nine ICOs that have raised more than
$100 million. For each ICO, the dataset lists an ID (numbered from 1 to 9), the name of the
cryptocurrency, the location of the ICO, the date of the ICO, the price of Bitcoin on the date of the ICO,
and the amount of funding raised (in millions of U.S. dollars).
Which of the following best represents the cases of this data frame? - correct answer ✔ICOs
Consider the following data frame on five airplane models operated by major commercial carriers.
CaseID Manufacturer Model First flight MaxPassengers
1 Boeing 737 1967 215
2 Boeing 747 1969 605
3 Boeing 787 2009 330
4 Airbus A320 1987 186
5 Airbus A380 2005 853
Which of the following statements about this data frame is/are accurate? Select all correct answers. -
correct answer ✔-"Model" is a categorical variable.
-"First flight" is a numerical variable.
-"CaseID" is a numerical variable.
, -Each case in this data frame corresponds to an airplane manufacturer.
-"Max passengers" is a categorical variable.
-"Manufacturer" is a categorical variable.
Bitcoin is a decentralized digital currency that functions without a central bank. It was first released as
open-source software in 2009. Since then, many of these cryptocurrencies have raised money through
Initial Coin Offerings (ICOs). A data frame gives information on nine ICOs that have raised more than
$100 million. For each ICO, the dataset lists an ID (numbered from 1 to 9), the name of the offered
currency, the location of the ICO, the date of the ICO, the price of Bitcoin on the date of the ICO, and the
amount of funding raised (in millions of U.S. dollars).
Which of the following variables in this data frame is/are numerical? Select all correct answers. - correct
answer ✔-The price of Bitcoin on the date of the ICO
-Amount raised
Match the terms below to their correct definitions. - correct answer ✔-Population: The set of all
possible cases that might have been included in a data set.
-Sample: A specific selection of cases from the population.
-Data frame: A tabular representation of a data set in which the rows correspond to cases and the
columns to variables.
-Code book: A file or separate list that provides all the necessary information to interpret each variable
in a data set
-Unit of analysis: The type of entity you choose to focus on in a data analysis
-Sampling bias: Any systematic discrepancy between a sample and the corresponding population
Which of the following statements about R scripts is/are correct? Select all correct answers. - correct
answer ✔-A script is a file that collects multiple statements (i.e. lines of R code) in a single document.
-Scripts make it simple to save your work and pick up where you left off, without having to remember
what you've accomplished already.
-One way to run R statements from a script is to highlight those statements and then hit Control-Enter
on the keyboard.
