Table 3.

Descriptive statistics: higher-level and lower-level skills in collaborative writing tasks

Task	Statistics	Higher-level skills		Lower-level skills			Total
		Organization	Development	Sentence structure	Word choice & grammar	Mechanics
1	Mean	6.11	6.88	19.94	21.97	18.07	14.59
	Std. deviation	.89	.50	1.10	1.10	.40	.87
2	Mean	6.42	6.64	17.50	18.00	18.09	13.33
	std. deviation	1.94	.53	.90	.90	.42	.76
3	Mean	5.01	4.81	14.09	16.09	16.70	11.34
	Std. deviation	.91	.60	1.96	.88	1.54	1.03
4	Mean	4.90	4.67	12.32	15.32	14.30	10.30
	Std. deviation	1.50	.54	.98	.90	.44	.82
5	Mean	4.87	4.09	10.80	10.72	14.70	9.03
	Std. deviation	1.20	.40	1.53	.44	.52	.69
6	Mean	4.81	4.83	10.20	9.11	11.20	8.03
	Std. deviation	1.42	.43	1.40	.70	.90	.94
7	Mean	4.01	4.81	9.09	11.09	11.70	8.14
	Std. deviation	.91	.60	1.96	.88	1.54	1.03
8	Mean	4.90	4.67	11.32	11.72	8.30	8.18
	Std. deviation	1.50	.54	.98	.90	.44	.82
9	Mean	4.17	4.09	10.50	9.42	8.70	7.37
	Std. deviation	1.20	.46	1.53	.44	.52	.69
10	Mean	4.81	4.73	10.20	8.11	8.29	7.22
	Std. deviation	1.42	.93	1.40	.70	.90	.94