During the last two weeks, Julian organised a campaign to get the workers in his office to reduce the amount of waste that they produce each day. Normally they produce a similar amount of waste each day. He recorded the amount of waste, in grams, produced on each day in the table below. Day Week 1 Week 2 Mon Tue 460 236 410 402 Wed Thu Fri Sat 261 243 249 350 312 301 385 389 In week 1, Julian had run his campaign from Monday to Thursday. While the campaign had no effect on the first day, there was a large reduction in waste produced for the rest of the campaign and the day after the campaign had ended. The amounts of waste then started to increase again. Julian ran the campaign again during week 2 and observed that similar changes in the waste produced occurred.