What is distractor analysis?

Asked By: Auritz Hogrebe | Last Updated: 14th March, 2020
Category: education standardized testing
4.7/5 (364 Views . 41 Votes)
An additional analysis that is often reported is the distractor analysis. The distractor analysis provides a measure of how well each of the incorrect options contributes to the quality of a multiple choice item. Once the item analysis information is available, an item review is often conducted.

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In respect to this, what is a distractor on a test?

Distractors are the incorrect answers in a multiple choice question. Choosing your distractors poorly can make your multiple choice questions much easier or harder than you may have intended.

Beside above, how do you calculate distractor efficiency? Distractor Efficiency and Its Relation With Bloom's Taxonomy In order not to penalize this type of item, the expected percentage of choices was calculated assuming that the choices were uniformly distributed: q = (100 -P-value)/k, where k is the number of incorrect alternatives.

In respect to this, what is distractor efficiency?

Distractor Efficiency and Its Relation With Bloom's Taxonomy A functional distractor was defined as one that exhibited negative discrimination and was selected by at least 5% of the participants.

What is discrimination index and its formula?

The Discrimination Index (D) is computed from equal-sized high and low scoring groups on the test. Subtract the number of successes by the low group on the item from the number of successes by the high group, and divide this difference by the size of a group. The range of this index is +1 to -1.

22 Related Question Answers Found

What is a distractor in math?

The incorrect answer choices in multiple choice tests are called distractors. In a well written test, these are found by purposely doing the most common errors that students do and then making that an answer choice.

What is the most common answer on a multiple choice test?

The idea that C is the best answer to choose when guess-answering a question on a multiple choice test rests on the premise that ACT answer choices are not truly randomized. In other words, the implication is that answer choice C is correct more often than any other answer choice.

How do you do multiple choice?

  1. 14 RULES FOR WRITING MULTIPLE-CHOICE QUESTIONS.
  2. Use Plausible Distractors (wrong-response options)
  3. Use a Question Format.
  4. Emphasize Higher-Level Thinking.
  5. Emphasize Higher-Level Thinking (continued)
  6. Keep Option Lengths Similar.
  7. Balance the Placement of the Correct Answer.
  8. Be Grammatically Correct.

What are the types of multiple choice questions?

Common types of questions are true/false, odd one out, negative, best answer, and multiple and combined answer questions.
  • True or False.
  • Odd One Out.
  • Negative Questions.
  • Best Answer.
  • Multiple Answer and Combined Response.

How do I write a good test?


How to Write a Test
  1. Step 1: Test Objectives. You need to determine what it is you are testing, and state that at the beginning of your test.
  2. Step 2: Test Format. Now that you know what it is that you are testing you need to determine the format of the test.
  3. Step 3: Wording.
  4. Step 4: Points.
  5. Step 5: Review.
  6. 6 Discussions.

What is true/false test?

True-False test items, also referred to as alternative-response questions, are used to assess a student's ability to determine whether a statement is correct. ' Students would answer 'True' because this is a factual statement. True-False questions are popular because of their versatility.

What is a stem question?

A question stem is the part of the survey question that presents the issue about which the question is asking. First and foremost, question stems must be written so that, to the degree that this can be controlled, all respondents understand the question being posed to them as meaning the same thing.

What is a distracter?

Definition of distracter. 1 : one that distracts. 2 : a usually plausible but incorrect answer given as a choice in a multiple-choice test.

What is Item difficulty?

Item difficulty is an estimate of the skill level needed to pass an item. It is frequently measured by calculating the proportion of individuals passing an item.

What are the steps in item analysis?


Steps in item analysis (relative criteria tests)
  • award of a score to each student.
  • ranking in order of merit.
  • identification of groups: high and low.
  • calculation of the difficulty index of a question.
  • calculation of the discrimination index of a question.
  • critical evaluation of each question enabling a given question to be retained, revised or rejected.

How can we solve the index of discrimination?

Determine the Discrimination Index by subtracting the number of students in the lower group who got the item correct from the number of students in the upper group who got the item correct. Then, divide by the number of students in each group (in this case, there are five in each group).

What is an item analysis and why is it important?

Item Analysis. Item Analysis is an important (probably the most important) tool to increase test effectiveness. Each items contribution is analyzed and assessed. To write effective items, it is necessary to examine whether they are measuring the fact, idea, or concept for which they were intended.

What is the power of item discrimination?

Item discrimination refers to the ability of an item to differentiate among students on the basis of how well they know the material being tested. Various hand calculation procedures have traditionally been used to compare item responses to total test scores using high and low scoring groups of students.

What is a table of specification?

A Table of Specifications is a two-way chart which describes the topics to be covered by a test and the number of items or points which will be associated with each topic.

What are the benefits of item analysis?


Benefits derived from Item Analysis 1. It provides useful information for class discussion of the test. 2. It provides data which helps students improve their learning.

What is a test analysis?

Test analysis is the process of looking at something that can be used to derive test information. This basis for the tests is called the test basis. The test basis is the information we need in order to start the test analysis and create our own test cases.

How do you measure difficulty?

Traditionally, the difficulty level of a problem is measured by a ratio called the item difficulty ratio, which is the ratio of the number of respondents who answer correctly to the total number of responses to the problem (Gronlund, 1981).