# [Vyxal](https://github.com/Vyxal/Vyxal) `Ṁ`, 11 bytes
```
ƛkanḟ›;∑?LḊ
```

# Explanation
```
ƛkanḟ›;∑?LḊ
ƛ            Start a mapping lambda for input
 ka          Lowercase alphabet
   n         Current letter
    ḟ        Find letter in the alphabet, return index
     ›       Increment by 1, because 0-indexed
      ;      Close mapping lambda
       ∑     Sum the list of indices.
        ?L   Get Length of input
          Ḋ  Check if Sum is divisible by the length.
```
[Try it Online!](https://vyxal.pythonanywhere.com/#WyLhuYAiLCIiLCLGm2thbuG4n+KAujviiJE/TOG4iiIsIiIsImFiY2IiXQ==)