calculate_mean fails for Python 2
Summary
wrong result
Environment
- Python version (
python --version): - OS: (
uname -a)
What is the current bug behavior?
(What actually happens)
What is the expected correct behavior?
(What you should see instead)
Steps to reproduce
(How one can reproduce the issue - this is very important.)
Relevant logs and/or screenshots
(Paste any relevant logs - please use code blocks (put the code between ```) to format console output, logs, and code as it's very hard to read otherwise.)