Question: ( a ) What do we mean by data being non - stationary compared to stationary data? ( 2 ) ( b ) Give an

(a) What do we mean by data being non-stationary compared to stationary data? (2)
(b) Give an example of a real-world problem that exhibits non-stationary data. (1)
(c) What are the main implications of non-stationary data for the construction and training of predictive
models?

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