Question

# Suppose a company has the following sales for the last six months (January – June): Month...

Suppose a company has the following sales for the last six months (January – June):

 Month Period Sales January 1 16 February 2 25 March 3 20 April 4 20 May 5 31 June 6 35 July 7 26 August 8 (a)

Use this information to answer the following 7 questions:

ques 1 given the information above

6.Using January through July values, develop a linear trend equation for this time series (to 4 decimals). Please write the equation in the proper form.

7.Using your answer from (7), what is the average change in sales per month for this company (to 2 decimals)?

#### Homework Answers

Answer #1

(6)

From the given data, the following Table is calculated:

 X Y XY X2 1 16 16 1 2 25 50 4 3 20 60 9 4 20 80 16 5 31 155 25 6 35 210 36 7 26 182 49 Total = 28 173 753 140

Linear Trend Equation for this Time Series is given by:

(7)

The average change in sales per month for this company = Slope = 2.18

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