Treherne361 Treherne361

28-10-2014
Mathematics

Answered

What is the mean of the set of numbers? {–9, –8, 4, –1} A. –5.5 B. –3.5 C. –2.8 D. 14

Answer :

28-10-2014

[tex]Formula\ for mean=\frac{sum\ of\ numbers}{amount\ of\ numbers}\\\\ Mean=\frac{-9-8+4-1}{4}=\frac{-14}{4}=-3,5\\\\Mean\ is\ equal\ to\ -3,5. [/tex]

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28-10-2014

Mean = (- 9 - 8 + 4 - 1) / 4
= (- 14) / 4
= - 3,5

Answer : B

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