The academic obtained a new sample (Sample B) and fitted a second regression model. The ANOVA table and the regression results are shown below.

	ANOVA
	df	SS	MS	F	Significance F
Regression	1	0.217	0.217	7.23	0.012
Residual	28	0.841	0.03
Total	29	1.058

	Regression results on Sample B
	Coefficients	Standard Error	t Stat	P-value	Lower 95%	Upper 95%
Intercept	1.069	0.154	6.934	0.000	0.753	1.384
international co-publication rate	0.517	0.192	2.689	0.012	0.123	0.911

(2 marks) What is the coefficient of determination (2

) of the regression model for Sample B? Answer (3dp) (Hint: Enter your answer as a decimal, such as 0.01)

(1 mark) Which sample (Sample A versus Sample B) has a better model fit? Answer

A. Sample A

B. Sample B

C. Neither Sample A nor Sample B

D. Insufficient information to make a decision