ACCA F2 Time Series Analysis

Comments

1. cinaa2 says

   October 24, 2018 at 11:31 am

   Thanks alot for your perfect clarification sir 🙂

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2. cinaa2 says

   October 23, 2018 at 9:24 pm

   Hello..
   Sir
   I really couldn’t understand the purpose of multiplicative model

   Actually I understood what it waana convey and its meaning ,but i counldnt understand why it is an alternative way to additive model
   In an other word whats the problem with additive model…!?

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   • John Moffat says

     October 24, 2018 at 9:11 am

     If sales grow a lot then you would expect the seasonal variation to grow a lot as well. With the additive model the seasonal variation stays the same. With the multiplicative model it will increase as well.

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     • cinaa2 says

       October 24, 2018 at 11:35 am

       Thanks alot for your perfect clarification sir 🙂

3. hammadmarfani says

   July 18, 2018 at 4:13 pm

   Sir,

   I am bit confused between underlying trend and seasonally adjusted figure. The centered avg we calculated, if i am not wrong is seasonally adjusted figure ?

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   • John Moffat says

     July 19, 2018 at 7:07 am

     The centred average is the trend, and from this we can calculate the average seasonal variations.

     The seasonally adjusted figures are where we take the actual figures and adjust them by the seasonal variations.

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