问答题

已知随机序列的样本观察值如下,试讨论此序列的平稳性。若不平稳,欲使序列平稳宜采取什么措施?
2.5,2.8,3.5,5,6,7.5,9,10.5,12,14,15.5,17,19,21,22,24,25,26,28,29,30,32,34,35,36,37,38,39,38,39.5,40,41,40.5,42,43,42.5,43.5,45,46,45,46.5,48.5,48,49,48,49.5,49,49.5,50,52,51,52,53,54


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