Item Analysis

1. How difficult is the test- difficult index
2. How discriminating is the item- discriminating index
3. How effective are the distracters- effectively

For Multiple Choice Only

1. Among the score from highest to lowest- total no. of test papers
2. Get upper 27%, lower 27%

Ex. 36 X 27%= 9 where 36 is the number of students

Actual:  52 items X 27%= 14.04
Lower Group(LG)= 9

Difficulty Index= RH + RL/30

HG=15

LG=15

Total= 30

RH= Number of right answer HG

RL= Number of right answer LG

Example:

Items	RH	RL	Index of Diffulty	Descriptive Level	Recommendation
1	13	6	.63	Moderately difficult	Very Acceptable
2	12	1	.07	Very Difficult	Discard

Difficulty Index

Index of Difficulty	Descriptive Level	Recommendation
0.91-above	Very easy	Discard, revise, not acceptable
0.76-0.90	Easy	Limited acceptability
0.26- 0.75	Moderately difficult	Very acceptable
0.11- 0.25	difficult	Limited acceptability
Less 0.11	Very difficult	Discard, revise

Discriminating Index

Index of Discrimination	Descriptive Level	Recommendation
0.41- above	High	Very acceptable
0.20- 0.40	Moderate	Acceptable
0-0.19	Low	Limited acceptbility
negative	Poor item	Discard

Example:

Items	RH	RL	Discriminating Index	Descriptive level	Recommendation
1	13	6	0.46	High	Very acceptable
2	3	6	-0.6	Poor Item	Not acceptable discard
3	10	4	0.4	Low	Limited acceptability

Discriminating Index= (RH-RL)/ 0.5N

                                = (13-6)/15= 0.46
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