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【多选题】
Private housing starts (PHS) are considered leading indicators of future economic activity. Using Quarterly data on private housing starts over the period Feb. 1980-Feb. 2000, the estimated correlograms are reported below.A.
Based on a = 5%, the private housing starts data exhibit seasonal variation
B.
Based on a = 5%, the private housing starts data do not exhibit seasonal variation
C.
To test seasonality, H 0 : r k = 0
D.
To test seasonality, the alternative hypothesis is: Ha: r k ¹ 0 K = 4, 8, 12
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