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February 23, 2017 at 6:53 pm
Multiplicative Q3 Table .. it was 95.35% , in the table u wrote 91.35 and solve it for 91.35%
im really benefiting from ur lectures but this one is a bit too long , would be better if u hinted out at the question areas
January 17, 2017 at 10:32 pm
Mr. John, the lecture was delivered very well.
I want to clear my doubt why you have shown the final result zero in the additive model?
What is the advantage of using Multiplicative model over the additive model and how we would come to know which methods is feasible to use?
December 12, 2016 at 10:21 am
very thankful to you sir.. now i am able able to understand it well
John Moffat says
December 12, 2016 at 11:05 am
Thank you for the comment 🙂
December 17, 2016 at 6:26 am
January 12, 2016 at 2:47 pm
great thanks sir i really understand now
January 13, 2016 at 8:23 am
I am pleased 🙂
December 4, 2014 at 12:17 am
Sir i really do not understand the averaging part, i am trying so hard to see what point am i missing but i do not, why do not we find the average of each year individually instead for example we are taking the second quarter of the first year and the first quarter of second year and finding their average and so on…
Also the moving average part.
August 23, 2014 at 9:10 pm
now I am getting there thank you Lecturer
October 8, 2013 at 6:16 am
why didnt we find the next 4 moving average of the moving averages to find the Trend but rather find the average of 2 moving averages.
If the trend find is to be plotted on a graph, the line is not perfectly straight, so can one continue to average the and if yes will it be average of 2 of the trend figures or what?. I realised that if the sales is averaged on every 4 sales basis throughout until two point are gotten, the line will be straight. Can it be done practically and academically?
October 8, 2013 at 9:18 am
The 4 quarter moving average was to get the average sales per quarter.
The only reason for centering it is because the middle quarter did not coincide with any one actual quarter. After centering it, we can then compare the actual sales in a quarter with the ‘average’ sales in the quarter.
There would be no point in keep averaging. The only point is to average out the seasonality. In practice, the trend may be a smooth pattern (either linear or curved) and would be easier then to forecast than the actual sales which keep going up and down because of the seasonality.
June 6, 2017 at 7:59 am
This Q&A also solved my problem, thanks a lot.
June 6, 2017 at 1:37 pm
You are welcome 🙂
August 22, 2013 at 8:32 am
thank you sir,i realy loved your lecture.very clear and easy to understand,
Mohammad Ibrahim says
June 11, 2013 at 11:11 am
Also why are the first two left out?
June 12, 2013 at 7:45 am
Because there is no average to compare them to.
(They are not left out in calculating the moving averages)
How do know that the centered average is for a certain month in case of even or odd number of total periods?
You only need to centre the average if it is an even number of periods. If it is an odd number of periods then the moving average already corresponds to one of the periods.
M. Osman Kamran says
November 12, 2012 at 12:45 pm
I am really thanksfull for Opentition.com site for real free accounting resources.
November 10, 2012 at 11:21 pm
August 15, 2012 at 12:09 pm
July 9, 2012 at 4:33 am
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