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17 May, 19:33

A set of data with 100 observations has a mean of 267. There are six outliers in the data set, which have a mean of 688. If the six outliers are removed, what is the mean of the new data set?

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  1. 17 May, 19:50
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    688x6=4128 (because you had to divide by 6 to get the mean of the 6 outliers so you do the opposite to find the total)

    267x100=26700 (again you had to divide by 100 to get the mean, so do the opposite to find the total)

    26700-4128=22572 (total after removing the outliers)

    22572/94=240.13 is the mean without the outliers
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