N˚	${\bar{Y}}_{u}$	$Y_{R u}$	$(Y_{R u} - {\bar{Y}}_{u})$	${(Y_{R u} - {\bar{Y}}_{u})}^{2}$
1	202	219.11	17.11	292.82
2	180	196.11	16.11	259.60
3	175	184.61	9.61	92.39
4	160	161.61	1.61	2.60
5	245	238.68	−6.32	39.9
6	211	202.68	−8.32	69.2
7	189	204.18	15.18	230.5
8	176	168.18	−7.82	61.1
9	209	228.43	19.43	377.6
10	211	192.43	−18.57	344.8
11	196	205.43	9.43	88.9
12	169	169.43	0.43	0.2