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

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SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.2The mean (or the average), is found by adding all the numbers in the set, and dividing by the number of these numbers.

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.2In your case: \(\mu =\dfrac{(9)+(8)+(4)+(1)}{4}\) where \(\mu\) denotes the mean.

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.2What is the sum of all elements in your set, can you find that for me?

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.2(9) + (8) + (4) + (1) = ?

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.2yes, that is right.

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.2Now, lets get back to finding the \(\mu\) (the mean). \(\mu =\dfrac{(9)+(8)+(4)+(1)}{4}=\dfrac{14}{4}=?\)

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.2Yes, and this is exactly right!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so that is the final answer

SolomonZelman
 one year ago
Best ResponseYou've already chosen the best response.2You are welcome!
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