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Implement Safe Average Function

WaymoData Scientist · Online Assessment
MediumData ScientistOnline AssessmentCoding & Algorithms

Last updated

This question evaluates proficiency with basic programming fundamentals including numeric computation, handling edge cases such as empty inputs, input immutability, and data type consistency.

Write a Python function average(values) that returns the arithmetic mean of a list of numbers.

Requirements:

  • If values is empty, return 0.
  • The input is a flat list of numeric values such as integers or floats.
  • Do not mutate the input list.

Examples:

  • average([1, 2, 3]) returns 2.0
  • average([-1, 1]) returns 0.0
  • average([]) returns 0