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1. Mean
easy
Googleentry
Given an array of numbers nums, compute the arithmetic mean (average) using NumPy.
Return the mean rounded to 2 decimal places.
Input Signature
| Argument | Type |
|---|---|
| nums | list |
Output Signature
| Return Name | Type |
|---|---|
| value | float |
Constraints
where is the length of the list
List elements are numeric (e.g.,
intorfloat)Must raise ValueError if the input list is empty
Must not use external libraries (pure Python only)
Hint 1
Maintain a running sum and a count while iterating through the list.
Hint 2
Avoid dividing by len(nums) if you want a single-pass solution that also validates elements as you go.
Hint 3
Use Python’s built-in round(value, 2) to enforce 2-decimal rounding at the end.
Roles
Data Scientist
Software Engineer
Data Analyst
Data Engineer
ML Engineer
Companies
Google
AmazonLevels
entry
Tags
numpy
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Python EditorLn 1, Col 1