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Time Series Analysis — Applied Maths STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceApplied MathsTime Series Analysis2 Marks
Question
State the two normal equations used in fitting a straight line.
✓

Answer

The normal equations used in fitting a straight line are
$\Sigma Y =n a t+b \Sigma X$ and $\Sigma XY =a \Sigma XX +b \Sigma X ^2$
where, number of years given in the data,
X = time
Y actual value
a, b = constants

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