Posted by: atri | October 26, 2012

As promised I have assigned temporary letter grades. With the caveat that things can (and probably will) change from now till the final exam, below the fold are more details. If you have a grade of D+ or below, please make an appointment for 15 mins to come see me between 9:30am and 3:30pm on Tuesday, Oct 30.

Let me start off with another caveat. I did a quick calculation as I wanted to give you guys a feel for where you were after the mid-term, so I added up all the mid-term score. (Note that for the final grade I will drop the three lowest HW score but I did not do that here.)

1. Add up all yur HW scores to get a number $H$ (out of a max of 500).
2. Let $M$ be your mid-term score (out of a max of 100)
3. Calculate your total (out of a 100): $\frac{100}{55}\cdot \left( \frac{5}{100}\cdot H +\frac{3}{10}\cdot M\right)$

Now you can compute your  final letter grade by figuring out where your total fits in  the table below

• $A: \ge 90$
• $A^-: \ge 70, <90$
• $B^+: \ge 60, <70$
• $B: \ge 53, <60$
• $B^-: \ge 47, < 53$
• $C^+: \ge 44, < 47$
• $C: \ge 42, < 44$
• $C^-: \ge 38, <42$
• $D^+: \ge 27, <36$
• $D: \ge 20, < 27$
• $F: <20$

A quick note on how I made up the table: The top median score got a letter grade of $C^+$ and an $A$ needs at least 90. For every other grade I looked for jumps in the score, which sometimes was small.