69 students took Quiz #1 in-class last week and 59 students turned in take-home quizzes. Here are some statistics on how the class performed:

**40-50 points**. 13 students scored in this range on the in-class quiz. After considering take-home results, this number rose to 23 students.**30-39.5 points**. 33 students scored in this range on the in-class quiz. After considering the take-home results, this number fell to 31 students (more students rose*out*of this group via the take-home than entered from below).**20-29.5 points.**18 students scored in this range on the in-class quiz. After considering the take-home results, this number fell to just 12 students.**10-19.5 points.**5 students scored in this range on the in-class quiz. After considering the take-home results, this number fell to just 3 students.

As you can see, the take-home quiz appears to have given many students a boost (in fact, only 16 of 59 scored noticeably worse on the take-home quiz; see below). This data should strongly encourage anyone who wants to improve their understanding of the material (as well as their scores) to attempt the take-home quizzes.

I also took a closer look at *how* students performed on the take-home and how this affected student scores.

Of the 59 students who took the take-home, 27 students saw their scores go up by a significant amount (arbitrarily defined as at least 2 points or 4%). 1 of these rising students had scored in the 40’s on the in-class quiz, but many more had begun with lower in-class scores: 30’s (14 students), 20’s (10 students), 10’s (2 students).

Perhaps because a different grading policy was applied to the take-home and in-class quizzes, 16 students scored markedly *lower* on the take-home quiz (arbitrarily defined as a drop of greater than 2 points or 4%). These were mostly students who had done quite well on the in-class quiz: 40’s (5 students), 30’s (10 students), 20’s (1 student).

Of course, when you begin with a high in-class score, it is simultaneously harder to raise your score via the take-home quiz and easier to see your take-home quiz score fall below what you achieved in-class (fortunately, you are not penalized by this). But it does demonstrate an important point: it is hard to write down ‘perfect’ answers for *all* of the quiz problems. No one should *blindly* trust the answers provided by a classmate. Your comrades can point you in the right direction, but *you need to check for yourself* whether you are completely satisfied with each answer.

For information on how these scores compare to last year’s class, how quiz scores typically change during the term, and how *I* think about quiz scores, please **read this post** from Dec 1, 2013.