The graph shows Canadian wheat exports in dollars from January 2006 to May 2009 in blue, together

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The graph shows Canadian wheat exports in dollars from January 2006 to May 2009 in blue, together with two moving averages. One moving average is averaged over four data points and the other over seven data points. 

1,000,000,000 900,000,000 800,000,000 700,000,000 600,000,000 500,000,000 400,000,000 300,000,000 200,000,000 100,000,00


a) Which moving average corresponds to the graph in green?

b) Which moving average corresponds to the graph in purple?

c) Why do the graphs start in different months at the left of the graph?

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Related Book For  answer-question

Business Statistics

ISBN: 9780133899122

3rd Canadian Edition

Authors: Norean D. Sharpe, Richard D. De Veaux, Paul F. Velleman, David Wright

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