The term regression of y on x is identified in base64 scheme by the sequence cmVncmVzc2lvbiBvZiB5IG9uIHg=, while the MD5 signature is equal to 68036d691d540e7d10f3dddcc8c4badb. The ASCII encoding of regression of y on x in hexadecimal notation is 72656772657373696f6e206f662079206f6e2078.