Question 1
emorandum for Assignment 02
Sanna: I think there is a printing error in the manual. Figure 1 is
Option 4 is the key incomplete with no proper explanation provided. Do you know
what this figure is about?
Lesiba, Joly, Paul
Joly: Looking at the numbers I think the figure is a graphical
representation of the information provided for Item 2.1 in Table 3
Lesiba: If your assumption is correct, Joly, the figure expresses the item-
total correlation for Item 2.1
Paul: No, I think the figure expresses the fact that five people
completed each item in the questionnaire
You agree most with, second most with and least with:
1. Paul, Joly, Lesiba
2. Joly, Lesiba, Paul
3. Lesiba, Paul, Joly
4. Lesiba, Joly, Paul
5. Joly, Paul, Lesiba
Question 2 Sanna: So, what do the numbers on the X-axis mean?
Option 5 is the key Lesiba: I think the numbers on the X-axis represent the possible
responses to Item 2.1
Paul, Lesiba, Joly Joly: If the numbers on the X-axis represent the possible responses to
Item 2.1 it means five people completed the item
Paul: If the X-axis represents Item 2.1 I would say it means the numbers
1 to 5 are associated with the scale categories that range from
disagree strongly to agree strongly
You agree most with, second most with and least with:
1. Lesiba, Joly, Paul
2. Lesiba, Paul, Joly
3. Paul, Joly, Lesiba
4. Joly, Lesiba, Paul
5. Paul, Lesiba, Joly
Question 3
Sanna: And those numbers in the square brackets, [1], [2], etc. What do
Option 1 is the key they stand for?
Paul, Joly, Lesiba Lesiba: The numbers in the square brackets are discrimination values.
They reflect the proportion of individuals who completed the item
correctly
Joly: No, each point indicates the item score and the total score of a
particular individual