(Solved by Humans)-) Develop a trend line equation for the demand for the following
Question
) Develop a trend line equation for the demand for the following data:
(use regression)
Year Demand for iPods (in thousands)
1 10
2 12
3 9
4 10
5 12
6 13
7 13
8 14
9 13
10 15
11 13
3(b) (2 points) Use the trend line equation to project the demand for Year 12.
3 (a)
Let n = the number of data points = 11
Let a equal n times the summation of all x-values multiplied by their corresponding y-values, like so:
a = 11 x {(1 x 10) +( 2 x 12) + (3 x 9)+( 4 x 10)...
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