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MA Chapter 19 Questions Time Series Analysis

VIVA

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Comments

  1. Tsotetsi says

    March 26, 2024 at 6:57 am

    Why do we use quarter 23 instead of -1500

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    • John Moffat says

      March 26, 2024 at 8:05 am

      The question says that the first quarter of 20X6 is numbered quarter 17. Carry on counting until the third quarter of 20X7 and you come to 23.

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  2. pinocchio95 says

    April 2, 2021 at 7:42 pm

    got it now! Thankyou John.

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    • John Moffat says

      April 3, 2021 at 9:30 am

      You are welcome 馃檪

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  3. pinocchio95 says

    March 29, 2021 at 7:15 pm

    HI, pls can anyone explain how third quarter of 20×7 is 23?

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    • John Moffat says

      March 30, 2021 at 7:35 am

      Which question are you referring to?

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      • pinocchio95 says

        March 30, 2021 at 4:59 pm

        question 5

      • John Moffat says

        March 31, 2021 at 7:57 am

        The first quarter of 20X6 is 17, the second quarter of 20X6 is 18, the third quarter of 20X6 is 19, the fourth quarter of 20X6 is 20.
        The first quarter of 20X7 is 21, the second quarter of 20X7 is 22, and the third quarter of 20X7 is 23 !!!

  4. louizach19 says

    March 5, 2021 at 5:14 pm

    Hello,

    Why we deduct Quarter 3 (1500 ) Seasonable Variation ?

    Thanks

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    • terezap says

      March 21, 2021 at 6:02 pm

      we are looking to forecast the sales units of quarter 3, and the seasonal variation for quarter 3 is -1500. therefore we subtract by -1500 to get the forecast for the 3rd quarter. if we were looking to forecast quarter 4, for example, we would subtract by -2500. hope that makes sense

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  5. aftab2628 says

    April 9, 2019 at 6:33 pm

    question 5

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  6. aftab2628 says

    April 9, 2019 at 6:33 pm

    hi john ,
    can you please explain me how the quarter 3 is 23 .thanks

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    • iqraanzar123 says

      January 8, 2020 at 3:25 pm

      where 2006 1st quater is=17 and 2nd quoter is = 18 so 3rd= 19 and 4=20 then 2007 1st qauter is=21 and 2nd=22 and 3 is = 23

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