Developing an Algorithm Learning Tool for High School Introductory Computer Science

Table 1

Scores of groups A and B in the pretest and posttest.

	Group		Mean	Std. deviation	Kurtosis	Skewness
Pretest	A	18	12.50	4.743	−0.460	0.597
	B	17	7.88	4.526	1.250	1.077
Posttest	A	18	18.61	5.479	−0.232	−0.453
	B	17	14.24	6.359	−0.457	0.178