Question

From the following data, fit a straight line trend by the method of least square.

Year : 2004 2005 2006 2007 2008 2009 2010

Sales (in lakhs) : 80 90 92 83 94 99 92​

Answer 1

Answer:

Trend Equation Y

t

=a + bx

For calculating the values of a and b, we may use the following equations -

∑Y=na+b∑X

∑XY=a∑x+b∑x

2

Substtuting the values given in the question you can get the trend values

Step-by-step explanation:

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Answer 2

Answer:

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