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Postby suresh.wadhwani2009 » Tue Apr 17, 2012 11:27 am

Pls explain:

Paul Graham, FRM® is analyzing the sales growth of a baby product launched three years ago by a regional company. He assesses that three factors contribute heavily towards the growth and comes up with the following results: Y = b + 1.5 X1 + 1.2X2 + 3X3 Sum of Squared Regression [SSR] = 869.76 Sum of Squared Errors [SEE] = 22.12 Determine what proportion of sales growth is explained by the regression results.
(i) 0.98
(iv) 0.55

My solution: R^2=SSR/SST
So, R^2=869.76/89.88=0.98

In solution the ans is 0.64
Can you pls explain

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