Nachbesprechung Gesamtprüfung Dezember 2010

[blapaul]

Wie lang wird es dauern, bis die Noten online sind?

Die Aufgabe war interessant, aber gefallen tut sie mir nur, wenn ich dafür gute Punkte bekomme!! )

we will try to get grades before Xmas

[GAN]

@blapaul

or just upload the solutions in the e-campus. It's better for our nerves .

[blapaul]

@blapaul

or just upload the solutions in the e-campus. It's better for our nerves .

ok, just to calm your nerves down... These are my personal answers (not double-checked) and it is possible that i made a mistake or two... But normally i am pretty good

1 a) €2, €3 or €5
b) €4 or €5
c) €6
d) €4.99, €5, €6
e) mixed bundling is optimal because valuations are negatively correlated and marginal costs are strictly positive
f) €18

2. only one mixed strategy equilibrium with probabilities “Leichte Klausur vorbereiten” 1/3, and “Für Klausur lernen” 2/3

3. a) nothing changes because of Coase theorem
b) nothing changes

4 a) €21

5. a) x=y (to answer honestly how much you learned)
b) now you need to set x to the expected value of y, which is difficult to forecast. So, a risk averse student should not like this new grading scheme. However, I think about using this new grading scheme in future exams. Students should then thruthfully reveal how much they really studied for the exam. And we will also learn how much of exam points were received by pure luck, cheating etc. I think it is a pretty cool idea to distinguish between "points earned by luck" and "points earned by studying". What do you think? I would be very much interested to discuss...

6. c) 18 and 2/3
d) 23 and 1/3

[big_bertha]

ok, just to calm your nerves down... These are my personal answers (not double-checked) and it is possible that i made a mistake or two... But normally i am pretty good

1 a) €2, €3 or €5
b) €4 or €5
c) €6
d) €5.99, €5, €6
e) mixed bundling is optimal because valuations are negatively correlated and marginal costs are strictly positive
f) €18

2. only one mixed strategy equilibrium with probabilities “Leichte Klausur vorbereiten” 1/3, and “Für Klausur lernen” 2/3

3. a) nothing changes because of Coase theorem
b) nothing changes

4 a) €21

5. a) x=y (to answer honestly how much you learned)
b) now you need to set x to the expected value of y, which is difficult to forecast. So, a risk averse student should not like this new grading scheme. However, I think about using this new grading scheme in future exams. Students should then thruthfully reveal how much they really studied for the exam. And we will also learn how much of exam points were received by pure luck, cheating etc. I think it is a pretty cool idea to distinguish between "points earned by luck" and "points earned by studying". What do you think? I would be very much interested to discuss...

6. c) 18 and 2/3
d) 23 and 1/3

ok, wenn eine 4.0 wieder mit 40% zu haben ist, dann sehe ich ein kleines licht am ende des tunnels.....

[GAN]

3b)
Why doesn't the quantity change? The external costs now are higher than in a. So the marginal social costs are higher as well.

[blapaul]

ok, wenn eine 4.0 wieder mit 40% zu haben ist, dann sehe ich ein kleines licht am ende des tunnels.....

i want to stick to 50% this time unless aggregate results are a complete disaster... we discussed it already here in forum. Lowering the bar to 40% is a cheap way of camouflaging a disastrous situation as if it is not that bad at all. I do not want to do that anymore unless absolutely necessary.

[blapaul]

3b)
Why doesn't the quantity change? The external costs now are higher than in a. So the marginal social costs are higher as well.

look at Coase theorem again (and remember little video I showed in class???)

[raikkas]

did anyone (who is not a genius) of your team try to solve this exam in the given time?
because i must say that there was not a lot of time to solve it

[blapaul]

did anyone (who is not a genius) of your team try to solve this exam in the given time?
because i must say that there was not a lot of time to solve it

everyone on my team is a genius (in their own ways). OK, seriously, no one tried yet. This is why i warned that all answers are not double-checked and few mistakes are possible.

I've seen a movie (Inception) where they claim that 1 minute of real time is about 5-6 minutes in our dreams. So you can try to fall asleap during exam, solve all problems in your dreams and then wake up with all solutions... did anyone try that?

[st@ni]

did anyone (who is not a genius) of your team try to solve this exam [...]

ROFL



@blapaul - some Feedback if you are interested:

Many thanks for posting your (noncommittal) answers

1. I also belief the exam was - once again - quite difficult. I think the main problem is that the exercises differ from the once learned by the students. Sometimes they are just confusing. For Example I have the answer 3 a) and more or less (I hope) 3 b) but It is not a good feeling to give such answers like "no changes" and this bad feelings about exercises do absolutely not help!

2. to 5) - alternative grading. I got a) with x = y ... was clear after a lot of thinking about it. But I'm not sure if I really understood b) - because If I see it right the best thing you can earn is y ... there is no combination with which you get a better grade. You get equal (if x = y) or less. So this is only a disadvantage for the students. Or did I miss something? I tried a lot of combinations and so on
To be honest. The last results where bad enough ... do you really want to introduce this system. (I understand that it would be interesting for you because of cheating, etc.)

3. Putting the level NOT to 40% would be unfair to all students who write this time. Why should somebody who gets 15 Points be positiv at the second exam and another student at the 3. exam with 15 Points negativ? BE FAIR



EDIT:
(1) Would it be possible to get the exam in e-campus so that we can have another look at it.
(2) Can you tell us how many points you get for what exercise (for example 1a: 1)