**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.