<p>I've made just 1 mistake in the math portion in October and my score is 770
However, one of my colleagues left 1 question and his score is 780 ?!<br>
What accounts for this difference although both of our raw scores are 53 ?!</p>
<p>Wrong answer is not equal to omitted answer. Wrong answer makes you lose points. </p>
<p>Right, but if it is only one wrong answer, rounding should give you raw score as one omit. So this is a mystery. I would go back and check the data: are you certain about the facts? And did you colleague take the October test as well?</p>
<p>One wrong and one omitted yield the same raw score, so they yield the same scaled score. It should not be possible for one wrong and one omitted to end up with different scores.</p>
<p>@pckeller
Yup He took October’s test and have only 1 left. Am gonna ask him again, but he told me so.</p>