Question

Please find the z-score for Center A and Center B. Thank you.

Center A	Center B
63	88
61	85
64	72
86	64
86	74
66	93
87	70
92	79
73	79
93	75
77	66
73	83
61	74
93	70
75	82
92	82
93	75
77	78
66	99
89	57
89	91
67	78
81	87
78	93
61	89
64	81
80	84
86	63
73	78
94	66
	84
	85
	85
	84
	59
	62
	91
	83
	80
	76

Answer 1

Mean for center A = 78

Mean for center B = 78.6

Standard deviation for A = 11.49213

Standard deviation for B = 9.940335

z score = (x value -Mean) / Standard deviation

.

Center A	Z sccore Center A		Center B	Z sccore Center B
63	-1.305241065		88	0.945642174
61	-1.479273207		85	0.64384148
64	-1.218224994		72	-0.663961526
86	0.696128568		64	-1.468763377
86	0.696128568		74	-0.462761064
66	-1.044192852		93	1.44864333
87	0.783144639		70	-0.865161989
92	1.218224994		79	0.040240093
73	-0.435080355		79	0.040240093
93	1.305241065		75	-0.362160833
77	-0.087016071		66	-1.267562914
73	-0.435080355		83	0.442641018
61	-1.479273207		74	-0.462761064
93	1.305241065		70	-0.865161989
75	-0.261048213		82	0.342040786
92	1.218224994		82	0.342040786
93	1.305241065		75	-0.362160833
77	-0.087016071		78	-0.060360139
66	-1.044192852		99	2.052244718
89	0.957176781		57	-2.172964996
89	0.957176781		91	1.247442868
67	-0.957176781		78	-0.060360139
81	0.261048213		87	0.845041943
78	0		93	1.44864333
61	-1.479273207		89	1.046242405
64	-1.218224994		81	0.241440555
80	0.174032142		84	0.543241249
86	0.696128568		63	-1.569363608
73	-0.435080355		78	-0.060360139
94	1.392257136		66	-1.267562914
			84	0.543241249
			85	0.64384148
			85	0.64384148
			84	0.543241249
			59	-1.971764533
			62	-1.669963839
			91	1.247442868
			83	0.442641018
			80	0.140840324
			76	-0.261560601