PSYC
2: Biological Foundations  Fall 2012  Professor Claffey
Test 1 Analysis
Exam was taken on Friday, October 12th, 2012
The test had 30 graded multiple choice questions and 3 ungraded
survey questions.
Descriptive Statistics
Number of students: 302
Median: 24.5/30 (81.7%)
Mean: 23.11/30 (77%)
SD: 5.21 (17%)
Reliability coefficient: 0.86
Max: 30/30
Min: 5/50
Grade distribution

Expected by students * 
Actual grades

Past PSYC 2 **

A

45%

31%

31%

B

40%

26%

26%

C

9%

17%

21%

D

2%

10%

2%

F



17%

2%

* Expected by students  Based on pretest survey question
** Average across 7 previous quarters of PYSC 2 (
source). Does
not sum to 100% because W/P/NP are not shown. This course is not
necessarily expected to match this distribution.
Studying
On average students studied 2.9 hours in the first week and 3.1
hours in the second week. 6% of students (n=19) did not study at
all but this group of students also received the highest mean
grade of 86%, representing students who are already familiar with
the material. The group with the 2nd highest mean grade studied
>10 hours. There was not a discernible pattern among students
studying between 210 hours.
Exam completion order
There was no relationship between order in which the exam was
completed and test grade (r=.07)
Survey Questions
The beginning of the exam included the following 3 optional survey
questions. Response rate was 9596% depending on the question.
Survey text:
These questions are optional and
do not count towards your grade.
1. What grade are you expecting to get ON THIS EXAM?
a. A  to A+
b. B to B+
c. C to C+
d. below C
2. How many hours outside of class did you spend
reading/studying in the FIRST week (neurons, action potentials,
synapses)?
a. 0
b. 02 hours
c. 25 hours
d. 5+ hours
3. How many hours outside of class did you spend
reading/studying in the SECOND week (neurotransmitters, synaptic
plasticity, studying for exam)?
a. 0
b. 02 hours
c. 25 hours
d. 5+ hours
Copyright 2012  Michael Claffey