Lab Attendance and Academic Performance

Table 6

Determinants of academic performance: (OLS) estimates with respect to the 1st midterm, 2nd, and 3rd.

Variables	The 1st Exam	The 2nd Exam	The 3rd Exam	The 1st Exam	The 2nd Exam	The 3rd Exam
Lab attendance before Exam 1	1.85			1.88
	(1.99)			(1.97)
Lab attendance after Exam 2 but before Exam 3		3.20^***			3.27^***
		(1.01)			(1.03)
Lab attendance after Exam 2 but before Exam 3			1.92^** (0.83)			1.88^** (0.84)
Age of student	17.58	−78.96	−88.17^**	16.02	−81.95	−87.39^*
	(57.94)	(56.07)	(44.50)	(57.46)	(57.00)	(45.32)
Age of student squared	−0.43	1.77	2.07^**	−0.39	1.84	2.05^*
	(1.35)	(1.31)	(1.04)	(1.34)	(1.33)	(1.06)
High school grade point average	3.42	0.08	−1.8	3.56	0.11	−1.79
	(2.77)	(2.73)	(2.20)	(2.73)	(2.75)	(2.21)
SAT	0.04^***	0.05^***	0.04^***	0.04^***	0.05^***	0.04^***
	(0.01)	(0.01)	(0.01)	(0.01)	(0.01)	(0.01)
Previous semester grade point average	10.14^***	7.14^***	8.04^***	10.46^***	6.94^***	8.13^***
	(1.74)	(1.67)	(1.41)	(1.73)	(1.72)	(1.44)
Spring 2009 credit hours	−5.55	2.58	10.19^**	−6.65	2.73	10.08^**
	(6.02)	(5.97)	(4.81)	(5.95)	(6.01)	(4.85)
Spring 2009 credit hours squared	0.16	−0.1	−0.34^**	0.18	−0.11	−0.33^**
	(0.19)	(0.19)	(0.15)	(0.19)	(0.19)	(0.15)
Students that live on campus	0.14	−1.93	−2.28	−0.57	−1.78	−2.41
	(2.25)	(2.24)	(1.79)	(2.23)	(2.27)	(1.82)
Female students	−7.31^***	−5.36^**	−2.62	−6.95^***	−5.59^**	−2.54
	(2.45)	(2.40)	(1.94)	(2.46)	(2.46)	(2.01)
Lab instructor A				−2.28	1.47	−0.48
				(2.78)	(2.89)	(2.32)
Lab instructor B				−6.73^**	1.87	−1.14
				(2.74)	(2.76)	(2.26)
Constant	−148.67	841.15	873.97^*	−116.34	869.21	867.59^*
	(619.50)	(601.61)	(476.37)	(614.59)	(611.48)	(485.10)
Observations	170	170	168	170	170	168
R-squared	0.366	0.367	0.426	0.392	0.369	0.427

Standard errors in brackets ^***𝑃<0.01, ^**𝑃<0.05, ^*𝑃<0.1.