1. Calculate the standard deviation for the variable Rct

2. Calculate the variance for the variable Pr

3. What percent of students sampled do not perform aerobics (decimal form)

4. Calculate the mean for the variable HRs.per.week

5. Calculate the variance for the variable Starting_Sal

• Age: the age of the subject
• Sex (1=male, 2=female)
• Aer: whether the subject participates in aerobic activities (1=yes, 2=no)
• Smk: whether the subject smokes (1=yes, 2=no)
• Caf: whether the subject consumed caffeine in the last 2 hours (1=yes, 2=no)
• Pr: pulse rate of the subject in beats per minute
• Rct: reaction time of the subject in milliseconds
• Starting_Sal: the starting salary of the subject upon graduation, in dollars
• HRs. per.week: the subject's average hours worked per week
• Major: the subject's major

	Record.Number	Age	Sex	Aer	Wts	Smk	Caf	Jck	Pr	Rct
1	1	20	1	1	1	2	1	1	72	125
2	2	18	1	2	2	2	2	2	80	150
3	3	21	1	1	1	2	2	1	60	100
4	4	18	1	2	2	2	2	2	60	160
5	5	18	1	1	1	2	2	1	53	150
6	6	18	1	1	2	2	2	1	81	140
7	7	18	1	2	2	2	2	2	67	170
8	8	20	1	2	2	1	2	2	63	150
9	9	18	1	2	2	2	2	2	72	210
10	10	19	1	2	2	2	2	2	72	250
11	11	18	1	2	2	1	2	1	76	275
12	12	21	1	2	2	2	2	2	76	150
13	13	21	1	1	2	2	2	2	80	100
14	14	19	1	1	1	2	2	2	60	190
15	15	19	1	2	1	2	1	1	72	160
16	16	20	1	2	1	2	2	2	80	210
17	17	18	1	2	1	2	2	1	80	200
18	18	20	1	2	2	2	2	2	80	175
19	19	18	1	2	1	2	2	2	104	180
20	20	18	1	1	1	2	2	1	80	175
21	21	19	1	1	1	1	2	1	56	160
22	22	18	1	2	2	2	1	2	68	159
23	23	20	1	1	2	2	2	2	70	180
24	24	18	1	2	2	2	2	1	72	190
25	26	20	1	1	2	2	2	2	80	175
26	27	19	1	2	1	2	2	1	78	150
27	28	18	1	2	1	2	2	1	62	200
28	29	18	1	2	2	2	2	1	64	200
29	30	18	1	2	1	2	2	1	88	197
30	31	20	1	2	2	2	2	2	75	200
31	32	18	1	2	1	2	1	2	68	175
32	33	23	1	2	1	2	2	2	73	140
33	34	18	1	2	1	1	2	1	60	155
34	35	18	1	2	2	2	2	2	96	180
35	36	18	1	2	1	2	2	1	78	210
36	37	18	1	2	2	1	1	2	92	170
37	38	18	1	2	2	2	2	2	100	105
38	39	21	1	1	1	2	2	2	80	175
39	40	17	1	1	2	2	2	1	76	180
40	41	20	1	2	2	2	2	2	71	203
41	42	18	1	2	2	1	1	1	77	193
42	43	19	1	2	1	2	2	2	70	133
43	44	18	1	2	2	1	1	1	85	190
44	45	18	1	2	2	2	1	1	80	153
45	46	21	1	2	2	2	2	2	68	150
46	47	19	1	1	2	2	2	1	76	168
47	48	18	1	2	1	2	2	1	84	183
48	49	23	1	2	1	1	2	1	84	183
49	50	22	1	2	2	2	2	2	72	150
50	51	19	1	1	1	2	1	1	60	190
51	52	19	1	2	1	2	1	1	68	150
52	53	19	1	1	1	2	2	1	68	183
53	54	18	1	1	1	2	2	1	66	137
54	55	18	1	2	1	2	1	2	63	145
55	56	19	1	1	2	2	2	1	78	180
56	57	18	1	2	2	2	2	1	74	110
57	58	18	1	1	1	2	1	1	68	187
58	59	19	1	1	1	1	2	1	72	186
59	60	18	1	1	2	2	1	1	75	223
60	61	18	1	2	2	2	1	2	80	176
61	62	18	1	2	2	1	2	1	84	180
62	63	19	1	1	1	2	2	1	56	100
63	64	19	1	1	1	2	2	1	56	100
64	65	19	1	1	1	2	2	1	80	146
65	66	18	1	2	2	2	2	2	76	190
66	67	18	1	2	1	2	1	2	80	175
67	68	18	1	2	2	1	1	2	90	170
68	69	18	1	2	2	2	1	1	88	130
69	70	18	1	2	1	2	1	2	86	186
70	71	19	1	2	1	1	1	2	76	243
71	72	23	1	2	1	2	2	1	84	190
72	73	20	1	2	1	2	1	2	82	180
73	74	21	1	2	2	1	1	2	90	166
74	75	19	1	2	2	2	2	1	68	210
75	76	19	1	1	2	2	1	1	69	170
76	77	18	1	1	1	2	2	1	68	156
77	78	18	2	1	1	2	2	1	80	110
78	79	18	2	1	1	2	1	1	92	170
79	80	18	2	2	2	2	2	2	82	205
80	81	18	2	2	2	1	2	2	80	180
81	82	21	2	2	2	2	1	2	76	163
82	83	18	2	2	2	2	1	1	80	140
83	84	20	2	2	2	2	2	2	88	166
84	85	18	2	1	1	2	2	1	80	150
85	86	18	2	1	2	2	2	2	80	150
86	87	18	2	2	2	1	1	1	82	120
87	88	18	2	1	1	2	2	1	80	70
88	89	18	2	2	2	2	2	1	94	150
89	90	18	2	2	2	2	2	2	93	150
90	91	18	2	2	2	1	1	1	84	180
91	92	18	2	2	2	2	2	1	72	100
92	93	18	2	2	2	2	2	2	86	150
93	94	18	2	2	2	2	2	2	80	190
94	95	18	2	2	2	2	2	1	74	100
95	96	18	2	2	1	2	2	2	73	210
96	97	18	2	2	2	2	2	1	81	220
97	98	19	2	2	2	1	2	2	72	225
98	99	18	2	2	2	1	1	2	80	200
99	100	18	2	2	1	2	2	2	76	275
100	101	18	2	2	2	2	1	2	80	250
101	102	18	2	1	2	2	2	1	80	270
102	103	19	2	1	2	2	2	2	89	240
103	104	18	2	2	2	2	2	2	94	150
104	105	21	2	1	2	2	2	1	64	155
##	106	19	2	2	2	2	2	1	76	135
##	107	19	2	2	2	2	2	2	59	240
##	108	19	2	1	2	1	2	1	140	260
##	109	18	2	2	2	1	2	1	79	110
##	110	18	2	2	2	2	2	2	63	180
##	111	21	2	2	2	2	2	2	80	190
##	112	17	2	2	2	2	2	2	88	310
##	113	23	2	1	1	2	1	1	72	160
##	114	18	2	2	2	2	2	2	80	190
##	115	18	2	2	2	2	1	2	82	212
##	116	17	2	2	2	2	1	2	104	235
##	117	18	2	2	2	2	2	2	80	220
##	118	19	2	1	2	2	1	2	72	200
##	119	18	2	2	2	2	2	1	89	163
##	120	18	2	2	2	2	2	1	82	180
##	121	18	2	2	1	2	1	1	89	230
##	122	18	2	2	2	1	1	1	86	200
##	123	19	2	2	2	2	2	1	80	130
##	124	19	2	1	1	2	1	2	70	173
##	125	18	2	2	2	2	1	1	93	208
##	126	18	2	2	2	1	2	2	75	200
##	127	19	2	2	2	2	2	2	86	250
##	128	18	2	1	2	2	1	2	84	150
##	129	19	2	1	2	2	2	2	88	196
##	130	19	2	2	2	2	1	2	106	126
##	131	20	2	1	1	2	1	2	65	176
##	132	18	2	1	1	2	2	1	68	206
##	133	20	2	1	2	2	2	2	80	177
##	134	18	2	2	2	2	1	1	102	181
##	135	24	2	2	2	2	2	2	120	136
##	136	18	2	2	2	1	1	2	88	163
##	137	18	2	2	2	2	2	1	91	175
##	138	18	2	2	2	2	1	1	66	167
##	139	19	2	1	2	2	2	2	85	156
##	140	18	2	1	2	2	2	1	43	213
##	141	19	2	1	1	2	2	1	70	228
##	142	18	2	2	2	2	2	1	84	243
##	143	37	2	2	2	1	1	2	80	225
##	144	18	2	2	2	2	1	2	72	200
##	145	19	2	1	2	2	2	2	126	163
##	146	19	2	1	1	2	1	2	92	225
##	147	38	2	2	2	2	1	2	85	241
##	148	18	2	1	2	2	1	2	76	130
##	149	28	2	1	2	2	2	2	108	207
##	150	18	2	2	2	2	1	2	107	255
##	151	18	2	2	2	2	2	1	76	223
##	152	18	2	1	1	2	2	1	64	150
##	153	18	2	2	2	2	2	2	88	190
##	154	18	2	2	2	2	2	1	80	160
##	155	18	2	1	1	2	1	2	64	183
##	156	18	2	2	2	2	2	1	88	166
##	157	20	2	2	2	2	1	2	84	172
##	158	18	2	1	2	2	2	1	65	152
##	159	18	2	1	1	2	2	1	63	250
##	160	18	2	1	1	2	2	1	63	250
##	161	18	2	2	2	2	1	2	84	250
##	162	19	2	1	2	2	1	2	80	200
##	163	24	2	1	1	2	2	2	120	200
##	164	23	2	2	2	2	2	2	101	210
##	165	18	2	2	2	2	2	1	66	170