new syllabus

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    the new syllabus of p3 include correlation coefficient those. the formula (y=a+bx);a=sum y/num of yr-b sum of x/num of yr…
    whether these formula will be provided in the question??

    on the other hand, the part exponential smoothing in our textbook was hard for us to understand..can u explain to us what is the meaning and how to calculate it??

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