Standard deviation

Please do not simply set me a question and expect to be provided with an answer. You must have an answer in the same book which you found the question, so you should ask about whatever it is in the answer that you are not clear about and then I will explain :-) Also, please do not ask me to type out what is already explained in our free lectures notes and the lectures that go with them. The definition of the coefficient of variation is on Pager 89 of our lecture notes and is explained in the lectures working through this chapter.

Sorry but i dont have an answer for that sir Its not in the book

There is no point in attempting questions for which you do not have an answer. You should be using a Revision Kit from one of the ACCA Approved Publishers - they have answers and explanations. The definition of the coefficient of variation is on Pager 89 of our lecture notes and is explained in the lectures working through this chapter, so tell me what answer you get and I will tell you whether or not you are correct (and if not correct then why not :-) )