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* Features provided by the app
-Calculation of normal mean (arithmetic mean)
-Geometric mean (automatic calculation of growth rate and return)
- weighted average
- Support negative and decimal numbers
- Support to save list of numbers

-Special Features:
within the sum of the list of numbers
Ability to obtain a real-time average by adjusting individual numerical values
(useful when looking at how the mean changes with a change in a numeric item)