I am new to Cryptography and I know there are better ways to test a cipher's effectiveness out there but in this case I am trying to test a cryptographic algorithm's(AES,xchacha20,twofish) hamming distance and avalanche effect for a school assignment/paper. Basically encrypting 50 files containing almost the same content but with differences of a single byte and calculating the hamming distance and avalanche effect of the encrypted files(ciphertext).
My question is, is there anything out there regarding a baseline of how much hamming distance an crypto algorithm should have? I can't find anything from NIST so I'm asking here in hopes of finding an established standard so I can reference it in my assignment.
These are the results that I have: