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Unit sales for new product ABC have varied in the first seven months of this year as follows: Month Unit Sales Jan Feb Mar

Unit sales for new product ABC have varied in the first seven months of this year as follows: Month Unit Sales Jan Feb Mar Apr May Jun Jul 248 482 341 174 456 310 273 What is the (population) variance of the data? Please round your answer to the nearest integer. Note that the correct answer will be evaluated based on the full-precision result you would obtain using Excel.

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