I’m working on a education & teaching report and need support to help me understand better.
Assignment 2 Stage 2 [Due: Friday 4 June 2021 (Week 14). Mark: 50%, minimum
25%]
Conduct an item analysis on the results obtained by the administration of the prepared in Stage I.
You will need data from about 15-20 students.
Notes to assist you in writing up your Project
1. The Guttman Scale
In presenting your final project, the following notes may be helpful. In fact, it is
strongly recommended that in the first step, you organise your data as
suggested. The suggestion is based on the concept of a scale articulated by L.
Guttman in the 1950’s, and hence often known as a Guttman Scale.
If a set of test items, which in the first instance imagine are multiple choice items
scored correct (1) and incorrect (0), are to form a scale, then the number
correct must mean more than simply a count of the number correct in a test. In a
scale, if Person A obtains 7 items correct and Person B obtains 5 correct, then
Person A with 7 correct should have answered correctly the 5 that Person B
answered correctly, and in addition, another two items, usually the two that
are the next more difficult.
Pearson A with 7 correct and Person B with 5
correct should not answer correctly two completely different sets of items.
The strict Guttman Scale pattern for 6 items includes those below, where the
items are ordered in difficulty. The greater the total score, the greater the
ability implied.
Requirements: 3500 | .doc file
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