A tourist center is open on weekends (Friday, Saturday, and Sunday)

A tourist center is open on weekends (Friday, Saturday, and Sunday). The owner-manager hopes to improve scheduling of part-time employees by determining seasonal relatives for each of these days. Data on recent traffic at the center have been tabulated and are shown in the following table:

Week

1

2

3

4

5

6

  Friday

144

155

151

155

157

163

  Saturday

255

257

263

266

275

278

  Sunday

165

163

170

171

177

181

a.

Develop seasonal relatives for the shop using the centered moving average method. (Round your intermediate calculations and final answers to 2 decimal places.)

b.

Develop seasonal relatives for the shop using the SA method. (Round your intermediate calculations and final answers to 4 decimal places.)