Assuming that there is no trend, deseasonalise the following data relatinį to the cash balances of a firm for the vear 1998 : (use multiplicative model, Month Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec Balance (in '000 Rs.) : 150 160 | 196 256 274 238 204 208 200 | 204 164 146 Seasonal Index : 75 80 98 128 137 119 102 104 100 102 82 73

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