No	${\bar{Y}}_{u}$	$Y_{R u}$	$Y_{R u} - {\bar{Y}}_{u}$	${(Y_{R u} - {\bar{Y}}_{u})}^{2}$
1	42.5	43.58	1.08	1.17
2	46.1	46.44	0.34	0.12
3	48.6	49.44	0.84	0.71
4	55.1	52.8	−2.30	5.29
5	48.8	47.18	−1.62	2.62
6	46.2	46.34	0.14	0.02
7	53.2	54.8	1.60	2.56
8	44.1	43.44	−0.66	0.44
9	49.9	51.14	1.24	1.54
10	43.2	42.68	−0.52	0.27
11	47.2	47.14	−0.06	0.00
12	49.2	50.4	1.20	1.44
jami				16.2