程序代写代做代考 Working with Arrays

Working with Arrays
and
Combining Data Part 2
STAT 342 – Fall 2020 Tutorial – 10

Use of Arrays within Loops
• Replacing 999 with missing values in multiple numeric variables
• With and without missing function
• Replacing NAs with missing values in multiple character
variables
• Converting all characters in multiple character variables to lower case
• Converting all characters in multiple character variable to upper case

Combining Data: One to Many

Combining Data: Many to Many