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2 January, 22:23

1) Given the data 12, 39, 21, 18, 24, 17, 12, 25:

What is the outlier in the data?

What is the mean with the outlier?

What is the mean without the outlier?

A) 12; 21; 18.4

B) 12; 18.4; 21

C) 39; 21; 18.4

D) 39; 18.4; 21

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Answers (1)
  1. 2 January, 22:27
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    In this data set, the outlier is 39 because it's value is not close to any of the other values.

    The mean with the outlier is 12+12+17+18+21+24+25+39 = 168

    168/8 = 21

    The mean without the outlier is 12+12+17+18+21+24+25=129

    129/7 = 18.4

    These are choice C.
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