In his second item analysis, Teacher Vince found out that more from the upper group got the test item #12 correctly. This means that the test item __________.*1 pointa. has a negative discriminating power.b. has a lower validityc. has a positive discriminating powerd. has a high reliability
Question
In his second item analysis, Teacher Vince found out that more from the upper group got the test item #12 correctly. This means that the test item __________.*1 pointa. has a negative discriminating power.b. has a lower validityc. has a positive discriminating powerd. has a high reliability
Solution
The answer is c. has a positive discriminating power.
Here's why:
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The upper group typically refers to the group of students who perform better on the test overall. They are the high scorers.
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If more students from the upper group got test item #12 correct, it means that this question is doing a good job of discriminating between students who have a good understanding of the material (the upper group) and those who don't.
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Therefore, the test item has a positive discriminating power. It's effectively distinguishing between different levels of understanding or ability among the students.
So, the correct answer is "c. has a positive discriminating power".
Similar Questions
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