<p>My Grade Class Avg
Exam 1- 80 68
Exam 2- 81 77
Exam 3- 80 69
Final - XX 80
Class will be curved to an 85</p>
<p>Lets assume all exams have the same weight,</p>
<p>What grade would I need on the final to get a 90?</p>
<p>Not sure if this is right but ~75</p>
<p>It’s 73. The curve will be 11.5, and you’ll have 5.5 extra points from the previous exams, which is just enough to bring a 73 to a 90.</p>
<p>It depends if by curve you mean a normal curve, a standard normal curve, an adjustment, whether 85+ is an A, or what.</p>
<p>Class will be curved to a mean, generally implies that there is a normal curve. Variances and means are calculated, and the overall mean is set to an 85. Let’s say everyone in the class does better than 85, then people would have their grades lowered so that the average was an 85. The person in the class with lowest grade would likely fail, even if he was above an 85. If this is what you mean, it’s impossible to determine what score you need because everyone else’s score affects the distribution.</p>
<p>If you’re talking about 85+ is an A, then just plug in the numbers and solve for x ;-x</p>
<p>If your professor said “Class will be curved to an 85” then he is stupid.</p>
<p>Above two posters are necessarily wrong as variance/standard deviation isn’t given if it is any type of “curve”.</p>
<p>I’m going to guess you’re talking about a linear adjustment (i.e. shift of the mean).</p>
<p>In which case Yonder is correct, there’d be an upward tick of 11.5 points.</p>