PSYC 1000, Exam 2, March, 2008

    To determine your current standing in the class, you should take your total points (posted in BlackBoard) and add up to twenty points (five points for each research participation credit earned).  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.

    Here are some statistics on the distribution of grades.  In computing these statistics I have assumed that each student has earned two research participation credits (10 points credited towards total points).  I also added six points to every score on the second exam, one more than called for by my grading scheme.  Consider it a small bonus.


N Minimum Maximum Mean Std. Deviation
Exam_1 85 30.00 100.00 75.9765 14.66935
Exam_2 82 37.00 101.00 70.5366 14.74156
Total 80 66 201 145.96 28.512

  Notice that the average grade on the second exam was five points lower than on the first exam.

Grades on the Second Exam


Frequency Percent
A 6 7.3
B 19 23.2
C 23 28.0
D 13 15.9
F 21 25.6
Total 82 100.0

Bar Chart

I liked better the looks of the distribution of grades on the first exam.

Grades on the First Exam

Bar Chart

Grades Averaged Across The First Two Exams

Grade

Frequency Percent
A 6 7.5
B 24 30.0
C 16 20.0
D 19 23.8
F 15 18.8
Total 80 100.0

Bar Chart

 

Correlation Between the Two Exams

    Scores on the second exam were well correlated with scores on the first exam, r = .70, p < .001.