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TIME SERIES — Statistics STD 12 Commerce — Question

Gujarat BoardEnglish MediumSTD 12 CommerceStatisticsTIME SERIES1 Mark
Question
The linear equation fitted using the data of $7$ weeks for a variable $y$ is $ŷ = 25.1-1.3t.$ Estimate the value of $y$ for the eighth week.
✓

Answer

To estimate the value of $y$ for the eighth week,
putting $t = 8$ in equation
$t = 25.1 - 1.3$
$(8) = 25.1 - 10.4 $
$= 14.7$
Thus, estimate value of $y$ is $14.7.$

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