Statistics

Pre-test

Post-test

N

Valid

40

40

Missing

0

0

Mean

11.2000

11.2000

Median

11.5000

11.0000

Mode

12.00

11.00

Std. deviation

Variance

Range

Sum

1.98972

3.959

10

448.00

1.88380

3.549

9

448.00