The owner of a convenience store near Salt Lake City in Utah has been tabulating weekly sales at the store, excluding gas. The accompanying table shows a portion of the sales for 30 weeks.
Week Sales
1 5602.4800
2 5742.8800
3 5519.2800
4 5723.1200
5 5606.6400
6 5720.0000
7 5494.3200
8 5385.1200
9 5026.3200
10 5213.5200
11 5241.6000
12 5636.8000
13 5318.5600
14 5279.0400
15 5126.1600
16 5440.2400
17 5197.9200
18 5116.8000
19 5172.9600
20 5084.5600
21 5264.4800
22 4916.0800
23 5315.4400
24 5600.4000
25 5237.4400
26 5062.7200
27 5238.4800
28 5568.1600
29 5218.7200
30 5414.2400
1. Report the performance measures for the techniques in parts a and b. (Do not round intermediate calculations. Round final answers to 2 decimal places.)