A supplier of school stationary recorded its quarterly sales figures ($00s) for the years 2009 to 2012. The data is shown in the table below. Year Q1 Q2 Q3 Q4 2009 48 52 16 35 2010 50 46 22 40 2011 68 34 26 35 2012 73 56 3.1 Calculate centred 4- point moving averages (MA) for the data. 3.2 Plot the 4-point MA series on the same graph as the original series. 3.3 Comment on the trend component of the sales.

A supplier of school stationary recorded its quarterly sales figures ($00s) for the years 2009 to 2012. The data is shown in the table below. Year Q1 Q2 Q3 Q4 2009 48 52 16 35 2010 50 46 22 40 2011 68 34 26 35 2012 73 56 3.1 Calculate centred 4- point moving averages (MA) for the data. 3.2 Plot the 4-point MA series on the same graph as the original series. 3.3 Comment on the trend component of the sales.

Mathematics For Machine Technology

8th Edition

ISBN:9781337798310

Author:Peterson, John.

Publisher:Peterson, John.

Chapter38: Achievement Review—section Three

Section: Chapter Questions

Problem 11AR: Read measurements a-h on the enlarged 32nds and 64th graduated fractional rule shown in Figure 38-3.

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