CVE Psychometric Testing & Interpretation 5

Question 1

Which statistical measure is MOST appropriate for describing the central tendency of a nominal-level variable such as occupational category?

Accepted Answer

Mode

Answer

The mode—the most frequently occurring value—is the only meaningful measure of central tendency for nominal (categorical) data.

Question 2

A vocational evaluator finds a correlation of r = 0.75 between scores on an aptitude test and on-the-job performance ratings. The coefficient of determination (r²) indicates that the aptitude test accounts for approximately what percentage of variance in job performance?

Accepted Answer

56%

Answer

r² = 0.75² = 0.5625, meaning the aptitude test accounts for approximately 56% of the variance in job performance.

Question 3

When a test is described as 'power' rather than 'speeded,' it means:

Accepted Answer

All examinees have adequate time; difficulty of items, not speed, determines performance

Answer

A power test measures ability through item difficulty with generous time limits, distinguishing it from speeded tests where pace determines performance.

Question 4

The Bennett Mechanical Comprehension Test (BMCT) is MOST appropriate for evaluating a client's suitability for:

Accepted Answer

Mechanical, technical, and engineering-related occupations

Answer

The BMCT measures understanding of mechanical principles and physical relationships, making it relevant for selecting or evaluating individuals for mechanical and technical jobs.

Question 5

In psychometric theory, the classical test theory formula T = X − E means:

Accepted Answer

Observed score equals true score plus error

Answer

Classical test theory states that an observed score (X) is the sum of the true score (T) and random measurement error (E), so X = T + E.

(CVE) Certified Vocational Evaluation Specialist Practice Test

(CVE) Certified Vocational Evaluation Specialist Practice Test

CVE Psychometric Testing & Interpretation 5