Research Article
New Indices for Refining Multiple Choice Questions
Table 2
Critical values for coefficient
for small number of errors and a significance level of 2.5%.
| + | 0.1 | 0.2 | 0.3 | 0.4 | 0.5 | + | 0.1 |
| 1 | 3.00 | 2.00 | 1.53 | 1.22 | 1.00 | 26 | 2.22 | 2 | 1.89 | 2.83 | 2.16 | 1.73 | 1.41 | 27 | 2.76 | 3 | 3.27 | 2.02 | 2.65 | 2.12 | 1.73 | 28 | 2.65 | 4 | 2.67 | 2.75 | 1.96 | 2.45 | 2.00 | 29 | 2.54 | 5 | 2.24 | 2.24 | 2.44 | 1.83 | 2.24 | 30 | 2.43 | 6 | 3.27 | 2.86 | 1.96 | 2.17 | 2.45 | 31 | 2.33 | 7 | 2.90 | 2.46 | 2.39 | 2.47 | 1.89 | 32 | 2.24 | 8 | 2.59 | 2.12 | 2.01 | 2.02 | 2.12 | 33 | 2.73 | 9 | 2.33 | 2.67 | 2.40 | 2.31 | 2.33 | 34 | 2.63 | 10 | 3.16 | 2.37 | 2.07 | 1.94 | 1.90 | 35 | 2.54 | 11 | 2.91 | 2.11 | 2.43 | 2.22 | | 36 | 2.44 | 12 | 2.69 | 2.59 | 2.14 | 2.47 | | 37 | 2.36 | 13 | 2.50 | 2.36 | 2.48 | 2.15 | | 38 | 2.27 | 14 | 2.32 | 2.14 | 2.22 | | | 39 | 2.72 | 15 | 3.01 | 2.58 | 2.54 | | | 40 | 2.64 | 16 | 2.83 | 2.38 | 2.29 | | | 41 | 2.55 | 17 | 2.67 | 2.18 | 2.59 | | | 42 | 2.47 | 18 | 2.51 | 2.59 | | | | 43 | 2.39 | 19 | 2.37 | 2.41 | | | | 44 | 2.31 | 20 | 2.24 | 2.24 | | | | 45 | 2.24 | 21 | 2.84 | 2.62 | | | | 46 | 2.65 | 22 | 2.70 | 2.45 | | | | 47 | 2.57 | 23 | 2.57 | 2.29 | | | | 48 | 2.50 | 24 | 2.45 | 2.65 | | | | 49 | 2.43 | 25 | 2.33 | 2.50 | | | | 50 | 2.36 |
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