Question

Calculate the seasonal indices from the following data using the average from the following data using the average method:

Year	I Quarterly	II Quarterly	III Quarterly	IV Quarterly
2008	72	68	62	76
2009	78	74	78	72
2010	74	70	72	76
2011	76	74	74	72
2012	72	72	76	68

Answer 1

Year	I Quarterly	II Quarterly	III Quarterly	IV Quarterly
2008	72	68	62	76
2009	78	74	78	72
2010	74	70	72	76
2011	76	74	74	72
2012	72	72	76	68
Quarterly Total	372	358	362	364
Quarterly Average	74.4	71.6	72.4	72.8
Seasonal Indices	102.2	98.35	99.45	100

The seasonal indices are given in the last row of the table above.