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In Mathematics / High School | 2014-10-28

What is the mean of the set of numbers \(\{-9, -8, 4, -1\}\)?

A. \(-5.5\)
B. \(-3.5\)
C. \(-2.8\)
D. \(14\)

Asked by Treherne361

Answer (3)

Mean = (- 9 - 8 + 4 - 1) / 4 = (- 14) / 4 = - 3,5
**Answer : B **

Answered by eah | 2024-06-10

F or m u l a f or m e an = am o u n t o f n u mb ers s u m o f n u mb ers ​ M e an = 4 − 9 − 8 + 4 − 1 ​ = 4 − 14 ​ = − 3 , 5 M e an i s e q u a l t o − 3 , 5.

Answered by luana | 2024-06-10

The mean of the set of numbers {-9, -8, 4, -1} is -3.5. This is calculated by finding the sum of the numbers (-14) and dividing by the total count (4). Therefore, the correct answer is option B.
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Answered by eah | 2025-01-21

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