PSYC
2: Biological Foundations  Fall 2012  Professor Claffey
Test 2 Analysis
Exam was taken on Friday, October 26th, 2012
The test had 37 graded multiple choice questions and 3 ungraded
survey questions. There were originally 38 questions but one
was thrown out.
Descriptive Statistics
Number of students: 285 (17 less than test 1)
Median: 29.0/37 (78.4%, 3.3% less than test 1)
Mean: 27.9/37 (75%)
SD: 5.21 (15.7%)
Reliability coefficient: 0.84
Max: 37/37
Min: 7/37
Grade distribution

Expected
on Test 1

Expected
on Test 2

Test 1
grades

Test 2
grades

A

45%

28%

31%

18%

B

40%

45%

26%

30%

C

9%

19%

17%

22%

D

2%

3%

10%

12%

F





17%

19%

NA

5%

5%



* Expected by students  Based on pretest survey question
MyPsychLab
63 students registered on
PsychLab. For students that registered, their average on Test
2 was 4.3 percentage points (79% compared to 74.8%) higher
than students that did not register.
Studying
On average students studied/read 2.3 hours the first week of the
unit (0.6 less than on Test 1) and 3.5 hours in the second week
(0.4 hours more than on Test 1) . 4% of students (n=11) did not
study at all but this group of students received an average grade.
There was not a discernible pattern between amount of studying and
grade. Bear in mind that this does not necessarily indicate that
studying is ineffective, but perhaps that students study to a
similar level of familiarity with the material, which takes
different lengths of time across students.
Change From Test 1
The following table details how students did on Test 2 compared to
Test 1
Changed less than 5% from
Test 1

28%

Improved more than 5% from
Test 1

26%

Decreased more than 5% from
Test 1

45%

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 vision LAST week?
a. 0
b. 02 hours
c. 25 hours
d. 5+ hours
3. How many hours outside of class did you spend
reading/studying hearing, touch, smell or taste THIS week?
a. 0
b. 02 hours
c. 25 hours
d. 5+ hours
Copyright 2012  Michael Claffey