Research analyst for a large investment firm

Assignment Help Basic Statistics

Reference no: EM131798465

Madelyn Davis is a research analyst for a large investment firm. She has been assigned the task of forecasting sales for W al-Mart Stores, Inc., for fiscal year 2011. She collects quarterly sales for Wal-Mart Stores, Inc. (in millions $) for the 10-year period 2001 through 2010, a portion of which is shown in the accompanying table. The full data set is on the text website, labeled Wal-Mart Sales.

Wal-Mart Quarterly Sales (in millions $)

	Quarters Ended
Years	April 30	July 31	October 31	January 31
2001	42,985	46,112	45,676	56,556
2002	48,052	52,799	52,738	64,210
....	....	....	....	....
2010	93,471	100,082	98,667	112,826

In a report, use the sample information to:

1. Use a scatterplot to determine which model best depicts trend for Wal-Mart's sales.

2. Determine whether or not a seasonal component exists in the series, using the seasonal dummy variable approach.

3. Given the conclusions on trend and the seasonal component, provide forecast values for the four quarters of 2011 as well as total projected sales for fiscal year 2011.

Reference no: EM131798465

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