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  3. question 1 national scan inc sells ratio frequency inventory tags...

Question: question 1 national scan inc sells ratio frequency inventory tags...

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QUESTION 1

  1. National Scan, Inc., sells ratio frequency inventory tags. Monthly sales for a 6-month period were as follows:

    Month:

    Sales

    Feb

    47

    Mar

    51

    Apr

    56

    May

    59

    Jun

    58

    Jul

    63


    Disregard the demand pattern of the given time series, You are asked to use the time series to derive a trend equation. In order to derive the trend equation is Ft = a + bt, you have to compute several components to compute the values for the variables a and b. Answer the following questions pertaining to information that are relevant to deriving the trend equation.

    a) The Σty =

    b) The Σy =

    c) The value for the b (slope of the trend line) =  (in 3 decimal places)

    d) The value for the a (intercept of the trend line) =  (in 3 decimal places)

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