INTRODUCTION TO PSYCHOLOGICAL STATISTICS – PSYC 204/POTH 204
ASSIGNMENT #3 (9 points)
Due Tuesday, Nov. 17, 2015, in class
WORK MUST BE INDEPENDENT, COMPLETE and NEATLY ORGANIZED.
SHOW YOUR WORK.
Assignments will be returned Tuesday, November 24th and resubmissions are due on
Tuesday, Dec. 1 in class. Please attach corrections to the back of your original assignment.
You may ask for help with the corrections, but please cite all sources.
Assignments that are marked ‘Accepted’ need not be resubmitted.
The following data was collected from a group of PSYC 204 students:
Subject # Age
1
2
3
4
5
6
7
8
9
10
11
12
13
14
22
20
19
19
19
20
19
18
20
19
18
18
22
20
Anxiety Expected
Grade
1.5 A
8 A
11 C+
6 A
2 A
1 A
7 A3 A
8 A8 B
3 A
7 C+
1.5 A
8 A
Study # Prev Math
Hrs
Courses
5
5
9
3
4
3
17
1
6
1
4
4
7.5
2
8
4
8
1
8
0
6
1
7
0
5
5
9
3
Most important
for success
passion
work
curiosity
work
work
work
work
work
work
work
work
patience
passion
work
Specify which test would be used for each of the following hypotheses. For each, state:
a) the hypotheses
b) the df
c) the critical value
For hypotheses 3, 4 and 5, also:
d) Conduct the test
e) write a short report:
1) The expected grades are not uniformly distributed.
2) Anxiety ratings are inversely related to the number of previous math courses.
3) Students who think that work is the key to success plan to study more than students
who name some other characteristic.
4) The average age is greater than 18.
5) Expected grade (A vs not A) is related to the key characteristics for success (work
vs not work)
