The Effect of Research and Development on Economic Growth in Ethiopia: The Untapped Potential for Prosperity

Table 2

Linearity test.

Wald test
Equation: untitled
Test statistic	Value	df	Probability
F-statistic	103.1868	(4, 16)	<.01
Chi-square	412.7472	4	<.01
Null hypothesis: C(2) = C(3) = C(4) = C(5) = 0
Null hypothesis summary
Normalized restriction ( = 0)		Value	Standard error
C(2)		.036486	.006196
C(3)		20.88898	6.016129
C(4)		5.741583	2.251605
C(5)		133.9384	125.7030