Question

Utilizing the data set, calculate: (1) the mean of sales, (2) the mean of labor costs, (3) variance of materials cost, (4) covariance of labor costs and material costs and (5) total sales.

Region	Sales	Labor Costs	Materials Costs
1	$2,055,279.00	$38,313.00	$17,989.00
2	$2,238,758.00	$63,294.00	$21,659.00
3	$1,143,833.00	$40,570.00	$25,403.00
4	$1,901,107.00	$54,704.00	$24,436.00
5	$2,194,766.00	$52,411.00	$17,782.00
6	$1,329,758.00	$37,071.00	$24,827.00
7	$1,510,285.00	$42,391.00	$18,448.00
8	$2,086,502.00	$50,228.00	$20,053.00
9	$2,328,835.00	$42,438.00	$23,983.00
10	$1,950,095.00	$40,898.00	$15,993.00
11	$1,411,194.00	$64,093.00	$26,194.00
12	$2,014,357.00	$38,075.00	$24,939.00
13	$971,042.00	$57,975.00	$24,213.00
14	$1,886,358.00	$65,003.00	$22,548.00
15	$1,450,856.00	$65,628.00	$25,459.00
16	$1,324,142.00	$45,014.00	$17,893.00
17	$1,185,863.00	$36,088.00	$18,024.00
18	$1,280,627.00	$47,377.00	$24,361.00
19	$877,951.00	$42,295.00	$21,354.00
20	$1,766,455.00	$47,708.00	$15,151.00
21	$1,989,767.00	$51,406.00	$21,806.00
22	$1,791,366.00	$45,453.00	$23,455.00
23	$1,574,468.00	$52,428.00	$23,293.00
24	$1,402,498.00	$59,573.00	$24,910.00
25	$992,695.00	$50,824.00	$24,523.00
26	$2,032,287.00	$37,911.00	$17,064.00
27	$618,691.00	$49,385.00	$16,298.00
28	$1,483,891.00	$57,440.00	$24,971.00
29	$830,502.00	$35,672.00	$26,114.00
30	$1,311,477.00	$64,644.00	$20,315.00
31	$2,254,852.00	$59,518.00	$19,364.00
32	$2,340,777.00	$43,302.00	$15,114.00
33	$522,921.00	$46,073.00	$16,259.00
34	$1,780,804.00	$66,295.00	$20,173.00
35	$1,120,573.00	$49,522.00	$21,510.00
36	$1,074,914.00	$52,215.00	$20,057.00
37	$1,996,619.00	$57,151.00	$25,535.00
38	$2,266,482.00	$64,753.00	$20,773.00
39	$906,194.00	$55,725.00	$17,606.00
40	$1,676,862.00	$46,237.00	$26,591.00
41	$1,253,440.00	$52,632.00	$26,056.00
42	$1,554,321.00	$59,347.00	$17,655.00
43	$808,068.00	$59,167.00	$17,267.00
44	$1,509,685.00	$54,288.00	$23,904.00
45	$1,893,126.00	$42,282.00	$23,259.00
46	$1,551,024.00	$48,968.00	$20,045.00
47	$1,604,888.00	$62,180.00	$25,556.00
48	$793,591.00	$47,919.00	$20,679.00
49	$1,025,239.00	$46,078.00	$17,497.00
50	$982,462.00	$54,289.00	$26,525.00
51	$786,630.00	$47,497.00	$16,240.00
52	$1,871,438.00	$46,231.00	$25,350.00
53	$849,289.00	$62,353.00	$19,487.00
54	$529,624.00	$60,315.00	$25,323.00
55	$1,272,403.00	$66,633.00	$20,256.00
56	$875,054.00	$35,083.00	$18,047.00
57	$2,224,090.00	$65,178.00	$25,494.00
58	$2,247,311.00	$36,910.00	$22,394.00
59	$1,065,190.00	$66,059.00	$21,867.00
60	$2,132,915.00	$59,572.00	$23,295.00
61	$2,381,990.00	$59,957.00	$17,401.00
62	$1,402,255.00	$37,839.00	$24,552.00
63	$1,142,278.00	$48,583.00	$26,322.00
64	$1,119,178.00	$59,016.00	$26,967.00
65	$2,330,258.00	$52,865.00	$17,403.00
66	$1,657,436.00	$60,601.00	$24,307.00
67	$2,330,143.00	$42,813.00	$15,603.00
68	$2,246,119.00	$55,714.00	$24,227.00
69	$1,851,284.00	$60,186.00	$22,651.00
70	$1,565,449.00	$52,410.00	$23,415.00
71	$631,655.00	$54,838.00	$23,930.00
72	$1,041,578.00	$53,259.00	$26,069.00
73	$1,717,073.00	$49,017.00	$19,504.00
74	$2,086,072.00	$66,546.00	$15,493.00
75	$703,115.00	$36,482.00	$20,155.00
76	$1,961,968.00	$56,448.00	$22,343.00
77	$2,006,155.00	$60,244.00	$21,762.00
78	$905,032.00	$47,843.00	$26,314.00
79	$1,161,260.00	$62,347.00	$16,935.00
80	$1,780,298.00	$63,689.00	$19,487.00
81	$1,223,913.00	$55,721.00	$20,090.00
82	$1,178,492.00	$52,115.00	$26,432.00
83	$1,902,295.00	$63,008.00	$18,893.00
84	$1,902,107.00	$42,529.00	$20,260.00
85	$1,096,683.00	$54,823.00	$17,784.00
86	$2,343,103.00	$41,489.00	$22,170.00
87	$1,497,228.00	$57,675.00	$20,074.00
88	$2,350,887.00	$56,698.00	$20,041.00
89	$1,205,109.00	$48,343.00	$16,287.00
90	$1,567,269.00	$66,323.00	$17,635.00
91	$1,679,185.00	$38,479.00	$20,610.00
92	$1,157,850.00	$35,737.00	$19,027.00
93	$704,072.00	$67,180.00	$18,978.00
94	$746,940.00	$49,907.00	$26,886.00
95	$639,623.00	$44,953.00	$16,844.00
96	$1,739,492.00	$42,005.00	$16,731.00
97	$2,085,389.00	$52,282.00	$17,566.00
98	$2,097,363.00	$51,606.00	$22,097.00
99	$1,885,468.00	$55,151.00	$21,048.00
100	$912,771.00	$64,190.00	$23,957.00

Answer 1