Table 2 Analysis of the 4th-year OSCE scores (total possible = 40)

Minimum

18.7

Maximum

36.9

Range

18.2

Count

207

Mean

27.6

Median

27.9

Mode

26.8, 25.5, 30.8, 28.3

Standard deviation

4.07

Variance

16.5

Mid-range

27.8

Quartiles

Quartiles

Q₁ → 24.9

Q₂ → 27.9

Q₃ → 30.8

Interquartile range (IQR)

5.9

Mean absolute deviation

3.30

Root mean square (RMS)

27.9

Std error of mean

0.28

Skewness

−0.07

Kurtosis

2.37

Coefficient of variation

0.14

Relative standard deviation

14.7 %