Table 6. Kendall’s Tau correlation.

Sr. #	Success factors	GSD	In-house
1	SPI leadership	0.180	0.015
2	Project management	0.169	0.170
3	Communication	0.246	0.019
4	Teamwork	0.309	0.210
5	Setting SPI goals	0.012	0.098
6	SPI awareness	0.097	0.015
7	Allocation of resources	0.325	0.076
8	SPI consultancy	0.200	0.023
9	Staff involvement	0.035	0.086
10	Senior management commitment and support	0.125	0.235
11	Organization infrastructure	0.091	0.014
12	Customer involvement/ Client support	0.027	0.072
13	Motivation	0.109	0.061
14	Training	0.112	0.282
15	Reward scheme	0.143	0.208
16	On time delivery	0.175	0.165
17	Easy to understand documentation	0.105	0.035