1. Learn
    2. /
  2. Courses
    3. /
  3. Defensive R Programming

Exercise

Refactoring: functions

Copying and pasting once is OK, but three times usually suggests something is wrong.

The provided code calculates an approximate 95% confidence interval for the variables x, y and z.

Instructions

100 XP
  • Create a function called ci(), taking a single argument called x with no default values.
  • Get the function to return the 95% confidence interval.