Table 14.

Arithmetic means and standard deviations of self-directed learning skills by income level.

Monthly Income	n	$\overline{X}$	ss
0–999	176	87.76	9.39
1,000–1,999	496	84.29	10.45
2,000–2,999	572	84.98	9.46
3,000–3,999	468	83.95	10.67
4,000–4,999	266	83.08	10.51
5,000 and above	622	84	10.66
Total	2,600	84.02	10.27