Question

What is the standard deviation for BthWeight rounded to 2 decimal places?

Ethnic	Smoking	BreastFeed	Age	PreWeight	DelWeight	BthWeight	BthLength	TimeNut
White	NonSmoker	No	29	115	140	3310	45	99
Black	NonSmoker	No	33	112	126	2650	48	64
Black	NonSmoker	No	19	125	145	2900	49	60
White	LightSmoker	Yes	26	108	146	3500	51.5	102
White	NonSmoker	Yes	35	112	133	2600	51	77
Black	NonSmoker	No	20	115	137	3770	52	110
Black	NonSmoker	Yes	22	99	135	2970	49	125
White	LightSmoker	No	23	140	178	3250	51	50
White	HeavySmoker	No	20	115	150	3260	50	67
Black	NonSmoker	No	26	135	172	2960	48	32
Hispanic	NonSmoker	Yes	23	103	138	3575	52.5	90
Black	NonSmoker	No	33	191	215	3870	55	100
White	LightSmoker	No	32	125	156	2380	47	87
White	NonSmoker	No	20	112	140	3800	50.5	83
Black	NonSmoker	No	21	140	165	3460	53	86
Hispanic	NonSmoker	Yes	41	170	202	2000	45.5	87
White	NonSmoker	Yes	20	115	138	3206	52	76
White	NonSmoker	Yes	24	130	160	3780	51	91
Hispanic	NonSmoker	No	24	107	146	3350	52	70
White	NonSmoker	No	21	180	206	2980	47	102
White	NonSmoker	Yes	27	125	163	3300	50	98
White	LightSmoker	Yes	25	140	160	3120	52	96
Hispanic	NonSmoker	Yes	26	120	141	3210	50	105
Black	NonSmoker	Yes	34	189	200	3600	48	81
Hispanic	NonSmoker	No	22	120	155	2800	46	63
Black	NonSmoker	Yes	28	140	182	3760	50	110
White	NonSmoker	Yes	25	133	164	3850	53	100
Hispanic	NonSmoker	Yes	28	92	117	2950	50	96
White	NonSmoker	Yes	25	165	224	4458	60	128
Black	NonSmoker	Yes	27	125	148	3860	52	102
Hispanic	NonSmoker	Yes	22	118	161	3493	49	82
White	HeavySmoker	Yes	23	135	173	2650	49.5	48
Hispanic	HeavySmoker	Yes	27	127	148	3200	48	65
White	HeavySmoker	Yes	20	87	163	3300	50	98
Black	LightSmoker	No	28	165	187	3640	51	57
White	NonSmoker	No	21	112	138	4080	54	79
Hispanic	NonSmoker	No	31	138	148	2950	50	66
White	LightSmoker	Yes	17	120	139	3560	53	102
Black	HeavySmoker	No	24	125	150	2760	45	82
Black	LightSmoker	No	24	125	150	2760	45	126
Black	NonSmoker	Yes	25	175	190	3664	47	77
Black	LightSmoker	No	20	128	159	3070	48	84
Hispanic	NonSmoker	No	35	140	174	3940	48	105
White	HeavySmoker	No	25	144	180	3050	51	80
White	NonSmoker	Yes	29	125	160	3350	48	85
Black	NonSmoker	Yes	27	150	183	3360	52	90
White	NonSmoker	Yes	24	105	129	3170	52	99
White	NonSmoker	Yes	22	128	172	2850	53	90
White	NonSmoker	Yes	25	90	125	3465	53.5	85
Black	NonSmoker	Yes	29	148	191	3730	53	72
White	NonSmoker	No	22	155	162	3750	51	65
Hispanic	NonSmoker	Yes	30	128	160	3460	48	125
Black	NonSmoker	No	16	113	138	2360	47	72
White	HeavySmoker	Yes	21	115	142	3030	50	84
Black	NonSmoker	Yes	26	98	129	2820	49	71
Hispanic	NonSmoker	No	23	115	129	2950	45	93
Black	HeavySmoker	No	17	99	124	3300	51	88
Black	HeavySmoker	No	28	152	168	3000	41	71
White	NonSmoker	Yes	25	148	173	2880	52	92
White	NonSmoker	Yes	20	105	152	3460	50	69
White	NonSmoker	Yes	36	145	180	2826	51	105
White	NonSmoker	Yes	23	264	250	3380	51	115
White	HeavySmoker	Yes	20	190	255	3124	50	85
White	NonSmoker	No	17	85	125	3240	48	67
Black	LightSmoker	No	19	137	172	2400	46	60
Black	NonSmoker	No	19	102	147	3000	47	105
Black	NonSmoker	No	25	125	152	3050	52	100
Black	NonSmoker	No	19	132	156	3360	51	84

Answer 1

Standard deviation of BthWeight

= stdev(Range of BthWeight) [Excel Formula]

= 450.83