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The mean of the data set is 18. What number is missing? 21,11,____,27,22,13,16

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The number missing is 16.

The sum of the numbers without the missing number is 110.

So, the we can set up the equation as (110 + x) / 7 = 18.

(110 + x) / 7 = 18

110 + x = 126

x = 16

User Kshatriiya
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