Question: question 1 national scan inc sells ratio frequency inventory tags...
National Scan, Inc., sells ratio frequency inventory tags. Monthly sales for a 6-month period were as follows:
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)