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Table 3 Analysis of the 4th-year written exam

From: Is Cronbach’s alpha sufficient for assessing the reliability of the OSCE for an internal medicine course?

Statistical parameters

Results

Minimum

18.125

Maximum

43.125

Range

25

Count

207

Mean

33.6

Median

33.75

Mode

34.37

Standard deviation

4.35

Variance

18.9

Mid-range

30.625

Quartiles

Quartiles

Q1 → 30.62

Q2 → 33.75

Q3 → 36.25

Interquartile range (IQR)

5.625

Mean absolute deviation

3.48

Root mean square (RMS)

33.9

Std error of mean

0.302

Skewness

−0.34

Kurtosis

3.36

Coefficient of variation

0.12

Relative standard deviation

12.93 %