The data library for the data provided in the file Assignment 2 – Raw Data is presented hereunder.
psychology
Description
Psychometric
Methods (PSY3307D)
Assignment 2
The data library for the data provided in
the file Assignment 2 – Raw Data is
presented hereunder. For this assignment, you will need to conduct several
analyses and report the appropriate results, as demonstrated and practiced in
the last two classes using SPSS.
|
Variable Name |
Variable Type |
Valid Responses |
Correct Responses(s) |
Notes |
|
Item1 |
MC |
A, B,
C, D |
C |
|
|
Item2 |
MC |
A, B,
C, D |
A |
|
|
Item3 |
MC |
A, B,
C, D |
A |
|
|
Item4 |
MC |
A, B,
C, D |
B, C |
There are 2 correct responses |
|
Item5 |
T / F |
True,
False |
True |
|
|
Item6 |
Essay |
0 – 10 |
n/a |
Scored out of 10 |
|
GS |
Combo |
0 – 100 |
n/a |
Gold Standard Test Score |
Score the test (6 items – Q1 through Q6) and
compute the Test score (out of 15). Provide answers to the following questions
(marks indicated in brackets):
a) Determine
the correlation between the Test score and the Gold Standard score. What do you
conclude about the validity of the new Test? (5 marks)
b) Examine
the correlations between the 6 items and the Test score. Identify any items
that could be eliminated. Explain your reasoning. (5 marks)
c) Compute
the reliability (Cronbach’s alpha) for the first five items (the MC and T/F
items). What do you conclude about the reliability of the new test? (5 marks)
d) If
you eliminated the items identified above in Question d), what would the new
Cronbach’s alpha for the remaining items be? (5 marks)
You may work in small groups on this assignment,
but each person MUST
provide an independent
submission written in their own words.
