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PRMIA Exam 8002 Topic 3 Question 79 Discussion

Actual exam question for PRMIA's 8002 exam
Question #: 79
Topic #: 3
[All 8002 Questions]

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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Suggested Answer: B

by Deeanna at May 07, 2024, 03:12 PM

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Lorenza
7 months ago
Glad I'm not the only one who found it tricky! Integrated of order 2 seems logical since differencing twice suggests a second order.
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Maryann
8 months ago
Definitely. C, 'differential,' sounded tempting, but it's not quite correct.
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Katy
8 months ago
Agree. 'Non-linear' and 'non-functional' don't seem right to me.
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Corrinne
8 months ago
Yeah, the one about differencing twice, right? I think it's B, integrated of order 2.
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Gerald
8 months ago
Found the exam question on time series a bit challenging.
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