PRMIA Exam 8002 Topic 3 Question 79 Discussion

Actual exam question for PRMIA's 8002 exam

Question #: 79
Topic #: 3

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:

Anon-linear

Bintegrated of order 2

Cdifferential

Dnon-functional

Show Suggested Answer

Suggested Answer: B

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

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6 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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6 months ago

Definitely. C, 'differential,' sounded tempting, but it's not quite correct.

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6 months ago

Agree. 'Non-linear' and 'non-functional' don't seem right to me.

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6 months ago

Yeah, the one about differencing twice, right? I think it's B, integrated of order 2.

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7 months ago

Found the exam question on time series a bit challenging.

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