A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

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

  • This Question is Open
  1. SolomonZelman
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    The mean (or the average), is found by adding all the numbers in the set, and dividing by the number of these numbers.

  2. SolomonZelman
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    In your case: \(\mu =\dfrac{(-9)+(-8)+(4)+(-1)}{4}\) where \(\mu\) denotes the mean.

  3. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    the answer is 4

  4. SolomonZelman
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    What is the sum of all elements in your set, can you find that for me?

  5. SolomonZelman
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    (-9) + (-8) + (4) + (-1) = ?

  6. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    -14

  7. SolomonZelman
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    yes, that is right.

  8. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so thats the answer

  9. SolomonZelman
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Now, lets get back to finding the \(\mu\) (the mean). \(\mu =\dfrac{(-9)+(-8)+(4)+(-1)}{4}=\dfrac{-14}{4}=?\)

  10. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    -3.5

  11. SolomonZelman
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Yes, and this is exactly right!

  12. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so that is the final answer

  13. SolomonZelman
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    yes

  14. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    thank you so much

  15. SolomonZelman
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    You are welcome!

  16. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.