1. avatar says

    Hello, Mr. Moffat

    I am trying to understand as to how you came across the way to get back the variable cost (b) and the fixed cost (a) back into its actual cost, as in if we never did the substituting to make the arithmetic quicker. Just to see if I was right, is this because if I transposed the formulae “y = a + bx” to suit ‘a’ and ‘b’, as in: a= y – b/x and b = y/x – a,
    – in a’s case you would only have to multiply by 1000 because the ‘y’ costs in the formulae were not being divided by the ‘x’ units.
    -and in b’s case you would have to multiply by 1000 (y costs) and also divide by 100 (x units) because ‘y’ was being divided by ‘x’. ?

  2. Profile photo of Ehtisham says

    Hi, open tuition haven’t video lecture for MAI and FA1.
    And…..,your video lectures are very supportive for us but they may be more supportive if simple and easy wording used in them. Thanks.

    • Profile photo of John Moffat says

      No – there are no video lectures for MA1 and FA1. We only introduced course notes for these papers recently – if there is the demand then we will produce video lectures when we have the time available.

      With regard to the wording, these lectures were recorded in a class of non-English students and the words used are very much the words that are used in the exams.

  3. Profile photo of Mahoysam says

    lol Mr John, you are funny in the class room! I remember when I took that lesson in F2 I was going to real classes not online and the tutor simply asked us to open the book and solve the formula without any explanation and the formula actually looks scary but it is easy if it is explained because it is nothing but working out numbers! I studied it on my own at home later and I knew it is simple but he had to explain what these symbols mean!!! I didn’t even know what sigma means, how am I supposed to solve it!!!

    • Profile photo of John Moffat says

      The totals in the lecture are correct. Are you sure that you have got the correct numbers for each of the Y’s, because the total does come to 420. (OK it is really 420,000 but it is more sensible to work in ‘000’s – it makes the arithmetic quicker and does not affect the answer.)

      • Profile photo of John Moffat says

        As it says in the Course Notes, although regression is no longer listed in the syllabus, it is still assumed knowledge from Paper F2. You will not be asked calculations but you are still expected to be aware of the idea.

      • avatar says

        actually sdmaalex is correct about the total Y’s being 425, because April Cost is 85000 not 80000 in the course notes, Thats why he/she came up with that total. But really good lecture and thanks

    • Profile photo of John Moffat says

      Did you really mean ‘b’ (the variable cost per unit)? If you did, then see my answer to this below.

      If you meant to type ‘a’ (the fixed cost) then we only need to multiply by 1000 because the costs were in thousands. (We do not need to divide by 100 because we are not multiplying ‘a’ by the units (which are in 100’s).

      • avatar says

        I have Heard today they have removed, correlation, regression, n time series from tha june 2013 syllabus n have added another chapter, Could you please let us know about it. it was just recent update

      • Profile photo of John Moffat says

        The syllabus change was announced last year – you can see the new syllabus and the changes on the ACCA website, there are many posts on our website about it, and of course there is a big article in the Student Accountant.

        Correlation and regression, and time series have indeed been removed from the syllabus because they are assumed knowledge from Paper F2. The examiner has said that you will not be asked for calculations although you are still expected to know what the topics are.

        Basic variances have also been removed – again because they are assumed knowledge – however you can still be asked calculations of basic variances and also understanding the rules for basic variances is necessary to be able to do planning and operational variances.

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