anamiri3ngm
anamiri3ngm anamiri3ngm
  • 25-07-2016
  • Mathematics
contestada

What is the mean of the set of numbers, {–11, 22, –2, –3}? A. –6.5 B. –1.5 C. 1.5 D. 6.5

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dalendrk
dalendrk dalendrk
  • 26-07-2016
[tex]\dfrac{-11+22+(-2)+(-3)}{4}=\dfrac{22-16}{4}=\dfrac{6}{4}=\fbox{1.5}\to\fbox{C.}[/tex]
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meerkat18
meerkat18 meerkat18
  • 30-07-2016
Since there are four numbers in the set, their mean (average) is calculated by dividing by four their sum. 
  Sum = -11 + 22 + -2 + -3 = 6
Dividing the sum by four gives an answer which is equal to 1.5. Thus, the answer is letter C. 
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