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A company uses regression analysis as forecasting technique for estimating sales. Following information is availible based on last five years sales:
£Y=121
£XY=412
£Y^2=3179Hint:Assume x starts from 1
£=SumUsing above information suggest how much variation is sales due to time
A.89.5%
B.97.8%
C.95.7%There is no point in simply setting me test questions and expecting me to provide an answer.
You must have an answer in the same book in which you found the question, so ask about whatever it is in the answer that you are not clear about – then I will explain.
Have you watched my free lectures? Everything needed to be able to answer this question is explained in the lectures – they are a complete free course for Paper MA (F2) and cover everything needed to be able to pass the exam well.
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