My friends are having an argument as to whether parallax error is systematic or random error. We have tried looking all around in books/internet etc but nothing mentions what type of error it is. Any help would be appreciated :)
Welcome to PF. I'm not sure under what circumstances this error is encountered in regard to your question. Parallax simply involves a different viewpoint. If I understand your question correctly, then it is a systematic error, not random. It would mean that the observer and the obsrerved are not in the same spatial relationship during multiple observations.
Lol my friends not completely satisfied. He asks that if the definition of systematic error is always to be off by a fixed amount, how can you repeat parallax error so that it gives the same amount of error for every reading?