Read the two statements and choose the correct option.
I. A moving average over an even number of years falls between two years, so it has to be centred.
II. A 3-year moving average must also be centred.

Only ICorrect answerYour answerOnly IICorrect answerYour answerBoth I and IICorrect answerYour answerNeither I nor IICorrect answerYour answer

Show the answer and explanation

CorrectNot quiteAnswer A

Correct answer: A

I: the middle of 4 years lies between the 2nd and 3rd, so pairs of averages are averaged again. True.
II: an odd period has a middle year, so no centring is needed. False.

Ten questions from Time Series & Trend, at your own pace.

Ten questions from Time Series & Trend, at your own pace.

Read the two statements and choose the correct option.I. A moving average over an even number of years falls between two years, so it has to be centred.II. A 3-year moving average must also be centred.