This is the index to analyze the test of KRA.
Difficulty Index: Determines the difficulty level of an item. [KRA]
Steps:
1. Assemble the past KRA results in chronological order according to past scores, from higher to lower scores.
2. Place the results in two groups: High Score Group and Low Score Group.
3. For each KRA you analyze, compute the scores for that item in each group.
For example, in KRA 1, the High Group may have 9, 8, 10, 8, 7, which totals = 42, while the Low Group may have 2, 3.2, 1, 4, which totals = 12.
Difficulty Index:
1. Add the total numbers in both groups and divide this number by the total number of elements [10].
From the above exercise, 42 + 12 = 54 is divided by 10, which is 54/10.
2. Multiply this figure by 100.
From the above exercise, 54/10 x 100 = 54%.
In this example, the difficulty index for the KRA 1 is 54.
I have used a very simple example to show the process. In real-life situations, it would vary widely.
The difficulty index indicates:
- KRA positioning
- Reflects on the nature of the jobs/tasks
- Training required to lift the game
- Aptitude of individual employees
- Attitude towards the tasks
- Competence required to tackle the job, etc.
Hope this is useful to you.
Regards,
LEO LINGHAM