If a time series has to be differenced twice in order to be transformed into a stationary series, the original series is said to be:
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Albina
8 months agoClare
8 months agoYan
8 months agoBrande
8 months agoDarci
7 months agoMilly
7 months agoTalia
7 months agoPercy
8 months agoSommer
8 months agoChristiane
8 months agoKerry
8 months agoMaryln
8 months agoBo
9 months agoVallie
7 months agoMargart
8 months agoMaryanne
8 months agoCeleste
8 months agoRene
9 months ago