'To what extent does a film's budget affect it's outcome?'

To what extent does a film's budget affect it's outcome?

This is a study that I have recently written around the question 'To what extent does a film's budget affect it's outcome?'. When writing this, I researched into real examples, such as 'The Blair Witch Project' and 'Tyrannosaur' in terms of funding, equipment and possible cinema popularity, gross profit or loss.