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Table 4 The correlation between distractor efficiency, difficulty index, and discrimination index (n = 59)

From: Item analysis: the impact of distractor efficiency on the difficulty index and discrimination power of multiple-choice items

Correlations

    

DE

DIF

DIS

DE

Pearson Correlation

1

-0.548**

− 0.259*

Sig. (2-tailed)

-

0.0000

0.0476

N

59

59

59

DIF

Pearson Correlation

-0.548**

1

-0.0492

Sig. (2-tailed)

0.0000

-

0.7124

N

59

59

59

  1. **. Correlation is significant at the 0.01 level (2-tailed)
  2. *. Correlation is significant at the 0.05 level (2-tailed)
  3. DE = distractor efficiency, DIF = difficulty index, DIS = discrimination index
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