PSAT index

<p>I took a PSAT writing practice test solely testing writing ability (not essay). I scored 33 out of 42 correct. What score out of 800, would be equivalent to 33/42. On my diagnostic i answered 16/20 correct and got a 70. I would assume based upon that that my score would be around a 680,690,700, considering that 33/42 is relatively equal to 16/20. Please explain how you calculated the score. Thank you.</p>