1 a) Using Class function check the type of data contained in a variable. b)Use n char function find the length of a character 2 a) Construct a basic data frame b)Assign the column names and row names of a data frame c) Using head function print out the first few rows. d) Access entire row while not specifying any column e) Access entire column while not specifying any row f)Create a set of indicators variable using model matrix. 3. a) Create a element list - Single, Two, Three, Empty list b) Access an individual element of a list c) Append elements to a list

4. Using R function create matrix 5. Using R function create Arrays 6. a) Read data from a csv file b) Read data from a database

7. Create an R Data files 8. a) Present simple graphs using base graphics and basic ggplot2. 9.Using R build a function using Arguments

10. a) Write a function using if and else b) Write a function using Switch c) Write a function using ifelse d) Write a function using logical and or operation 11.a) Write a function that using for loop b) Write a function that using while loops. c) Write a function that using controlling loop 12 Write a function using apply, 1apply, sapply,mapply and aggregate

13.Combine multiple data sets into one and change the orientation from column based to row based. 14.Write a function for building strings 15.Using k-means partitioning of data into groups.