National Scan, Inc., sells ratio frequency inventory tags. Monthly sales for a 6-month period were as follows:
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National Scan, Inc., sells ratio frequency inventory tags. Monthly sales for a 6-month period were as follows:
Month: | Sales |
Feb | 65 |
Mar | 66 |
Apr | 66 |
May | 71 |
Jun | 72 |
Jul | 72 |
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 =
Related Book For
Data Analysis and Decision Making
ISBN: 978-0538476126
4th edition
Authors: Christian Albright, Wayne Winston, Christopher Zappe
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