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Table 2 Concurrent validity of experimental tests based on correlation between first year participants’ O-NET scores and scores in multiple choice tests

From: The number of options in multiple choice items in language tests: does it make any difference? Evidence from Thailand

 

3-option test

4-option test

5-option test

n (1st year students only)

45

48

38

Mean O-NET score (%)

44.29

44.52

45.97

Mean multiple choice test score (%)

47.98

41.77

39.14

Correlation coefficient (r)

0.790

0.759

0.634

significance (p <)

0.001

0.001

0.001

P < 0.05 confidence interval of correlation coefficients

0.746 – 0.879

0.606 – 0.858

0.394 – 0.793