lesson 5

• R


  A STATISTICAL PROGRAMMING LANGUAGE commonly used for statistical analysis, data visualization, and other forms of data manipulation
• Variables


  Reserved memory location to STORE VARIOUS INFORMATION AND VALUES, as we create a variable in our program, some space is reserved in memory
• Data Types

  • Vectors
  • Lists
  • Arrays
  • Matrices
  • Data Frames
  • Factors
• Vector


  A SEQUENCE OF ELEMENTS which share the same data type
• Creating Vectors


  1. Using the colon(:) operator

  2. Using the seq() function

  3. Using the c() function - combine
• Data Frame


  COMPRISED of ROWS and COLUMNS, where elements of each column is of the same type
• SPACES BETWEEN CHARACTERS

  DO NOT AFFECT CODE. It’s a good practice to add a space between

  characters to make it easier to read.
• SPACES BETWEEN CHARACTERS DO NOT AFFECT CODE. It’s a good practice to add a space betweencharacters to make it easier to read.