From the following data calculate the index of irregular variations and percentage deviations : Month : Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. 88.5 91.2 89.6 96.4 92.3 95 99.1 91.2 94.6 94.4 95.2 95.4 Index of C & I Index of C91.8 90.9 91.4 93 94.3 95.3 95.3 94.4 94.2 94.6 95 96

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