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A seasonal index for a monthly series is about to be calculated on the basis of three years' accumulation of data. The three previous July
A seasonal index for a monthly series is about to be calculated on the basis of three years' accumulation of data. The three previous July values were 110, 150, and 130. The annual monthly average is 190. What is the approximate seasonal index for July? ANSWER Unselected 0.684 Unselected 0.487 Unselected 1.462 Unselected I DON'T KNOW YET
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