Podcast
Questions and Answers
What is the primary use of R programming language?
What is the primary use of R programming language?
- Web Development
- Artificial Intelligence
- Data Science (correct)
- Database Management
What is the significance of the matrix() function in R?
What is the significance of the matrix() function in R?
- It creates a list of characters
- It creates a three-dimensional array
- It creates a two-dimensional array (correct)
- It creates a one-dimensional array
How can you access the element in the 2nd row and 3rd column of a matrix P?
How can you access the element in the 2nd row and 3rd column of a matrix P?
- P[,3]
- P[2,3] (correct)
- P[3,2]
- P[2,]
What is the department of the employee with emp_id 4?
What is the department of the employee with emp_id 4?
What is the purpose of the byrow argument in the matrix() function?
What is the purpose of the byrow argument in the matrix() function?
What is the type of the start_date column in the employee_data dataframe?
What is the type of the start_date column in the employee_data dataframe?
What is the difference between a matrix and an array in R?
What is the difference between a matrix and an array in R?
What is the purpose of the Pearson correlation test?
What is the purpose of the Pearson correlation test?
What is the output of the command print(P[2,])?
What is the output of the command print(P[2,])?
How many rows are in the employee_data dataframe after expansion?
How many rows are in the employee_data dataframe after expansion?
What is the name of the employee with emp_id 3?
What is the name of the employee with emp_id 3?
What is the dimension of the array created in the example?
What is the dimension of the array created in the example?
What is the output of print(result[3,2,2])
?
What is the output of print(result[3,2,2])
?
How are the columns and rows named in the matrix?
How are the columns and rows named in the matrix?
What is the data type of the object 'factor.data'?
What is the data type of the object 'factor.data'?
What is the purpose of a factor in R?
What is the purpose of a factor in R?
What is the structure of a data frame in R?
What is the structure of a data frame in R?
What type of relationship does the Pearson correlation coefficient measure?
What type of relationship does the Pearson correlation coefficient measure?
What is the assumption of the Spearman rho test?
What is the assumption of the Spearman rho test?
What is the purpose of the Shapiro test?
What is the purpose of the Shapiro test?
When would you use Kendall tau test?
When would you use Kendall tau test?
What is the graphical method to check for normality of distribution?
What is the graphical method to check for normality of distribution?
What is the condition to use Pearson correlation coefficient?
What is the condition to use Pearson correlation coefficient?