Step 2		Step 3
		Time:	Pulse:	Find the z-scores		Multiply the z scores
		34.12	152	-1.29	1.26	-1.63
		35.72	124	0.91	-1.69	-1.54
		34.72	140	-0.46	0	0
		34.05	152	-1.38	1.26	-1.75
		34.13	146	-1.27	0.63	-0.8
		35.72	128	0.91	-1.27	-1.15
		36.17	136	1.53	-0.43	-0.65
		35.57	144	0.7	0.42	0.29
		35.37	148	0.43	0.84	0.36
		35.57	144	0.7	0.42	0.29
		35.43	136	0.51	-0.43	-0.22
		36.05	124	1.36	-1.69	-2.3
		34.85	148	-0.29	0.84	-0.24
		34.7	144	-0.49	0.42	-0.21
		34.75	140	-0.42	0	0
		33.93	156	-1.55	1.68	-2.61
		34.6	136	-0.63	-0.43	0.27
		34	148	-1.45	0.84	-1.22
		34.35	148	-0.97	0.84	-0.82
		35.62	132	0.77	-0.85	-0.65
		35.68	124	0.85	-1.69	-1.44
		35.28	132	0.3	-0.85	-0.26
		35.97	139	1.25	-0.11	-0.14
Step 1	Mean	35.06	140.04		Step 4	-16.41
	Std Dev	0.73	9.47		Find the sum of the products
					Step 5	-0.75
					Divide by n-1