M.Sc. DEGREE EXAMINATION, APRIL/MAY 2018.
Second Semester
Data Science
Paper II R PROGRAMMING
21422 A
Time 3 Hours Max. Marks 70
PART — A
Answer any FIVE questions. 6 30 Marks)
Each question carries 6 marks.
1. Explain about sub setting and sorting of data frames.
2. What is an array? Create a simple matrix with 3 3 size in R.
3. What is list? Create a list 1st that contains the fifth element from the top and the
entire fourth column of prop.
4. Explain how to define while and for loops in R.
5. Describe various input and output operations in R.
6. What is Sappy and Tappy in Give its advantages.
7. Write procedure create data interface between R and web data.
8. Describe various statistical operations performed in R.
PART — B
Answer ONE questions from each Unit. 10 40 Marks)
Each question carries 10 marks.
UNIT I
9. What is a vector in Explain operations on vectors.
Or
10. What are the order factors? Summarizing and comparing order factors with
example.

UNIT II
11. Explain about relations operators and vectors, logical operators and vectors.
Or
12. How to create, naming and accessing the list elements.
Write a R program to find sum of natural numbers using for loop.
UNIT III
13. Discuss different mathematical functions in R programming.
Or
14. What is Box plot and Bar chart? Explain importance of boxplot and bar chart with
example?
UNIT IV
15. Explain about linear regression analysis and multiple regressions with example.
Or
16. How to importing CSV and Excel tiles to Explain.
———————