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March 9, 2021 at 9:10 am
Hi John, how do we know when to use the formula for population variance and when to use the formula for sample variance? I.e. when do we know to divide just by n or by n-1 when calculating variance? TIA!
John Moffat says
March 9, 2021 at 2:44 pm
Sampling theory (which Is what this question seems to be referring to) is not in the syllabus for Paper MA. It used to be a long time ago, but that is many years ago now 🙂
November 14, 2020 at 10:02 am
SORRY TO SAY BUT I GUESS U GOT THE ANSWER OF SIGMA X-X2 WRONG IT IS 17514428 NOT 17694428
November 14, 2020 at 10:42 am
True – I must re-record the lecture. However the printed answer in the lecture notes is correct 🙂
(Please don’t type in capitals 🙂 )
November 8, 2020 at 9:59 am
Excuse me sir, I cant find practice questions of this chapter.
November 8, 2020 at 10:21 am
There are none. However there will be lots of questions in your Revision Kit (and it is absolutely essential that you have a Revision Kit from one of the ACCA approved publishers because they are full of exam standard questions for practice).
August 30, 2020 at 9:30 pm
Sorry to ask but how is Arithmetic Mean $1817 worked out?
August 31, 2020 at 8:10 am
I show the calculation in the previous lecture working through example 2 in this chapter !!!
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