**1. How many sorting algorithms are available?**

**Answer:** There are 5 types of sorting algorithms are used which are:-

1. Bubble Sort

2. Selection Sort

3. Merge Sort

4. Quick Sort

5. Bucket Sort

**2. Explain how to create new variable in R programming?**

**Answer: **For creating new variable assignment operator **‘<-’** is used.

**For Example:**

**mydata$sum <- mydata$x1 + mydata$x2**

**3. What are R packages?**

**Answer: **Packages are the collections of data, R functions and compiled code in a well-defined format and these packages are stored in library. One of the Stability of R is the user-written function in R language.

**4. What is the workspace in R?**

**Answer: ** Workspace is the current R working environment which includes any user defined objects like vector, lists etc.

**5. What is the function which is used for merging of data frames horizontally in R?**

**Answer: ** Merge()function is used to merge two data frames.

**Example: **

**Sum<-merge(data frame1,data frame 2,by=’ID’)**

**6. what is the function which is used for merging of data frames vertically in R?**

**Answer: ** rbind() function is used to merge two data frames vertically.

**Example:**

**Sum<- rbind(data frame1,data frame 2)**

**7. What is the power analysis?**

**Answer: **It is used for experimental design .It is used to determine the effect of given sample size.

**8. What package is used for power analysis in R?**

**Answer: **In power analysis Pwr package is used in R.

**9. Which method is used for exporting the data in R?**

**Answer: ** There are many ways to export the data into another formats like SPSS, SAS , Stata , Excel Spreadsheet.

**10. Which packages are used for exporting of data?**

**Answer: ** For Exporting data in excel xlsReadWrite package is used and for sas,spss ,stata foreign package is implemented.