1. In which package survival analysis is defined?
Answer: Survival analysis is defined under the survival package.
2. What is the use of MASS package?
Answer: MASS functions include those functions which performs linear and quadratic discriminant function analysis.
3. Define qda().
Answer: qda() prints a quadratic discriminant function.
4. Define lda().
Answer: lda() is used to print the discriminant functions which is based on centered variable.
5. What is the use of forecast package?
Answer: It provides the functions which are used for automatic selection of ARIMA and exponential models.
6. Define auto.arima().
Answer: It is used to handle the seasonal as well as non-seasonal ARIMA models.
7. What is principal() function?
Answer: It is define in psych package which is used to rotate and extract the principal components.
8. What is FactoMineR?
Answer: It is a package which includes quantitative and qualitative variables. It also includes supplementary variables and observations.
9. What is the full form of CFA?
Answer: CFA stands for Confirmatory Factor Analysis.
10. What is the use of boot.sem() function?
Answer: It is used to bootstrap the structural equation model.