Grades

Your cumulative score for the semester is a weighted sum of component scores, with the following weights:

• 15.0%: Written homework (2.5% each)

• 45.0%: Machine problems (7.5% each)

• 10.0%: Midterm 1

• 10.0%: Midterm 2

• 20.0%: Final exam

Extra Credit

• Extra credit will be available on some of the MPs. This counts for up to 10% of whatever points the MP is worth.

• Extra credit is also available for correctly answering the questions of other students on CampusWire. This counts for up to 1% of your cumulative semester grade.

Grade Cutoffs

Grade cutoffs are approximately as follows, where $\mu$ is the class average, $\sigma$ is the standard deviation. These thresholds are not guaranteed, but they rarely change by much.

$$\begin{array}{r}\begin{array}{rl}& A+:min(0.99,\mu +1.5\sigma ),A:min(0.94,\mu +0.5\sigma ),A-:min(0.90,\mu +0.25\sigma )\\ & B+:min(0.85,\mu ),B:min(0.80,\mu -0.75\sigma ),B-:min(0.75,\mu -\sigma )\\ & C+:min(0.70,\mu -1.25\sigma ),C:min(0.65,\mu -2\sigma ),C-:min(0.60,\mu -2.25\sigma )\\ & D+:min(0.55,\mu -2.5\sigma ),D:min(0.50,\mu -2.75\sigma ),D-:min(0.45,\mu -3\sigma )\end{array}\end{array}$$