The following table shows quarterly demand $($in thousand units$)$ for a product over $6$

years.

PART A

Assuming there is no trend, calculate the seasonal index $($S$.$I.$)$ for each quarter. Report

final answers accurate to $4$ decimal places. Do not round intermediate calculations.

S$.$I. for Quarter $1=$

S$.$I. for Quarter $2=$

S$.$I. for Quarter $3=$

S$.$I. for Quarter $4=$