PSYC 1000, Exam 2, March, 2009

    To determine your current standing in the class, you should take your total points (posted in BlackBoard) and add 14 points (assuming that you expect to satisfy the survey and research participation requirement, which constitutes 7% of you final grade, that is, seven points per exam).  If that yields 180 or more, you have an A, 160 or more a B, 140 or more a C, 120 or more a D, below 120 an F.


Descriptive Statistics
  N Mean Std. Deviation
Exam_1 91 75.8462 12.77578
Exam_2 88 66.7727 14.52206
Total 86 143.1163 24.57278


    Notice that the mean on the second exam is nine points lower than that on the first exam.  I did caution the class that the second exam would be more difficult than the first.  I hoped that that caution would motivate most to put in more study time for the second exam.  I expect the third exam to be the most difficult of the semester, as it will include material on the brain and nervous system, topics many students find difficult.

    To determine your grade on the second exam, add 7 points to your score (assuming that you will satisfy the survey and research requirement, which constitutes 7% of your final grade).  If that yields 90 or more, you have an A, 80 or more a B, 70 or more a C, 60 or more a D, below 60 an F.


Grades on the 2nd Exam
   Percent
Grade A 6.8
B 13.6
C 22.7
D 21.6
F 35.2
Total 100.0

Overall Grades After Two Exams
   Percent
Grade A 5.8
B 23.3
C 26.7
D 26.7
F 17.4
Total 100.0


Grades on the First Exam


Grades on the Second Exam


Total Grades (Combining the Two Exams)



 

 

Correlations
  Exam2
Exam1 Pearson Correlation .652**
Sig. (2-tailed) .000
N 86
**. Correlation is significant at the 0.01 level (2-tailed).


    Notice that the correlation between the two exams is very high -- on average, students who did well on the first exam also did well on the second exam, and those who did poorly on the first exam also did poorly on the second exam.  This correlation is statistically significant.