group_theory
EX-TER-MIN-ATE!'
Staff member
Administrator
Volunteer Staff
Lifetime Donor
20+ Year Member
- Joined
- Oct 2, 2002
- Messages
- 4,863
- Reaction score
- 2,248
I know most of you guys/gals have never heard of the Angoff and the Hofstee methods but they are an integral part of your lives (exam wise). Just a little FYI
The Angoff method begins with a discussion of the candidate who is minimally qualified to pass the exam.
Panelists then review each test item and estimate the probability this minimally qualified candidate will
answer the item correctly. A passing score is derived for each panelist by summing these item probabilities.
The final passing score is calculated by taking the average passing score across panelists.
The Hofstee method does not require individual item judgments. Instead, panelists are asked to give their
impressions of what the minimum and maximum failure rates should be for the exam, as well as what the
minimum and maximum percent correct scores should be. These minimum and maximum failure rates and
percent correct scores are averaged across panelists and projected onto the actual score distribution to
derive a passing score. The Hofstee method is often used to evaluate or adjust the passing score derived
using the Angoff method. When the two methods produce similar passing scores, they validate each other.
When they diverge, executive committees typically use both sources of information to decide where to set
the passing score.
The Angoff method is the most popular method used to set passing scores on licensure and certification
exams.
The Angoff method begins with a discussion of the candidate who is minimally qualified to pass the exam.
Panelists then review each test item and estimate the probability this minimally qualified candidate will
answer the item correctly. A passing score is derived for each panelist by summing these item probabilities.
The final passing score is calculated by taking the average passing score across panelists.
The Hofstee method does not require individual item judgments. Instead, panelists are asked to give their
impressions of what the minimum and maximum failure rates should be for the exam, as well as what the
minimum and maximum percent correct scores should be. These minimum and maximum failure rates and
percent correct scores are averaged across panelists and projected onto the actual score distribution to
derive a passing score. The Hofstee method is often used to evaluate or adjust the passing score derived
using the Angoff method. When the two methods produce similar passing scores, they validate each other.
When they diverge, executive committees typically use both sources of information to decide where to set
the passing score.
The Angoff method is the most popular method used to set passing scores on licensure and certification
exams.
