Welcome to Biostat 203B: Introduction to Data Science.

Today

• Introduction and course logistics
• Linux basics

Homework (not graded)

• Fill out a short survey. It helps me better taylor the course to your background.

• If you have not used R/RStudio before,
  1. Download and install R v3.5.1 or later versions from http://cran.stat.ucla.edu
  2. Download and install RStudio Desktop Open Source Edition from https://www.rstudio.com/products/rstudio/#Desktop
• Accessing the teaching server:
  1. There is a teaching server you can use for exercise and homework. The ip address is server.biostat-m280.info or 35.235.104.58.
  2. Wifi: Be aware that UCLA_WEB is restricted to HTTP and HTTPS. Use UCLA_WIFI or eduroam for accessing teaching server. See https://humtech.ucla.edu/computing-support/wifi/ for details.
  3. An account has been created for those enrolled in the class. The username is same as that in your email address in MyUCLA. The temporary password is same as your username. E.g., if you email is joe_bruin@ucla.edu, then the username for your account on teaching server is joe_bruin and the temporary password is m280.
  4. Log in teaching server by ssh username@server.biostat-m280.info on Mac terminal or using PuTTY on Windows.
  5. After log in using your temporary password, issue command passwd to change your password to a more secure one immediately. If you don’t change your password, anyone can log in your account and mess up your files.
  6. Later we will learn how to set up the more secure key authentication.
  7. Both R and RStudio are installed on the teaching server. You can access and use RStudio on the server by pointing your browser to address http://server.biostat-m280.info:8787.
  8. This server is for education purpose. You are not allowed to run simulations or any program unrelated to this class.