GROUP 9

Which of the following best describes the median in a set of test scores?

• A) The average of all the scores

• B) The score that appears most frequently

• C) The middle score when all scores are arranged in order

• D) The difference between the highest and lowest scores

What does a high standard deviation indicate about the test scores?

• A) The scores are very close to the mean

• B) The scores are widely spread out from the mean

• C) Most scores are above the mean

• D) Most scores are below the mean

Which method of calculating reliability coefficient adjusts the half-test correlation for test length?

• A) ANOVA

• B) Spearman-Brown Prophecy Formula

• C) Kuder–Richardson Formula 20

• C) Kuder–Richardson Formula 20

What does the range of a data set represent?

• A) The average score of all data points

• B) The most frequently occurring score

• C) The difference between the highest and lowest scores

• D) The square root of the variance

What does the Standard Error of Measurement (SEM) indicate about a test taker's score?

• A. It measures the test taker's true knowledge.

• B. It indicates the range within which the test taker's true score is likely to fall.

• C. It shows the average score of all test takers.

• D. It determines the difficulty level of the test.

Given a reliability coefficient (rrr) of 0.90 and a standard deviation (σ\sigmaσ) of 15, calculate the SEM.

• A. 4.74

• B. 5.00

• C. 3.87

• D. 6.32

What is the primary purpose of item analysis in test construction?

• A. To increase the number of test items

• B. To evaluate and improve the quality of test items

• C. To create more challenging test questions

• D. To decrease the difficulty of the test

How is the facility value for dichotomous scoring items calculated?

• A. By counting the number of incorrect responses

• B. By averaging the total scores of all test-takers

• C. By dividing the number of correct responses by the total number of test-takers

• D. By subtracting the number of incorrect responses from the total number of test-takers

What does a high discrimination index indicate in criterion-referenced tests?

• A. The item is too easy for the majority of test-takers

• B. The item does not effectively distinguish between different levels of ability

• C. The item effectively distinguishes between Achievers and Non-Achievers

• D. The item should be removed from the test

Which of the following is NOT an assumption of the Rasch model?

• A. Items have a fixed level of difficulty

• B. Test-takers have stable ability levels during the test

• C. Test performance will always be a perfect reflection of ability

• D. Items can be arranged from easiest to most difficult