Math Is Fun Forum
You are not logged in.
- Topics: Active | Unanswered
Pages: 1
#1 2007-09-04 11:43:21
- sizerman
- Member
- Registered: 2007-09-04
- Posts: 0
Tryin to find the mean of numbers!
What is the mean of these numbers 5,5,7,6,8,7,5 ? Thanks for any help!
Offline
#2 2007-09-04 12:53:08
- MathsIsFun
- Administrator
- Registered: 2005-01-21
- Posts: 7,711
Re: Tryin to find the mean of numbers!
Check out How to Calculate the Mean Value and The Mean Machine (put your values into it)
"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman
Offline
#3 2007-09-04 13:54:50
- John E. Franklin
- Member
- Registered: 2005-08-29
- Posts: 3,588
Re: Tryin to find the mean of numbers!
Averages are so awesome!
Like say we just guess the answer is 6.
Now the three 5's make 3 below by one.
And the two 7's make 2 above by one.
And the one 8 makes 1 above by two.
So 3 below, and 2 above times one AND 1 above by two.
Looks like 3 below versus 4 above.
So 6 is not exactly the answer.
Very interesting indeed.
igloo myrtilles fourmis
Offline
#4 2007-09-04 21:43:40
- mathsyperson
- Moderator
- Registered: 2005-06-22
- Posts: 4,900
Re: Tryin to find the mean of numbers!
That's a very useful method for making means a bit easier to find. I forgot what its name is though.
John has found that if all the numbers were 6 less than they are, then they would add up to 1 and so their average would be 1/7. Now just put the 6 back in and now we know that the average we're looking for is 6 1/7.
Why did the vector cross the road?
It wanted to be normal.
Offline
#5 2007-09-05 10:14:24
- John E. Franklin
- Member
- Registered: 2005-08-29
- Posts: 3,588
Re: Tryin to find the mean of numbers!
Cool!! Now add another 6 into the list to average.
Then you get 6 and 1/8. 49/8, yup, works.
igloo myrtilles fourmis
Offline
#6 2007-09-05 12:42:30
- landof+
- Member
- Registered: 2007-03-24
- Posts: 131
Re: Tryin to find the mean of numbers!
Well, averages don't exist in real life... especially non-natural numbers. But all the same, averages are very interesting
I shall be on leave until I say so...
Offline
#7 2017-02-19 15:19:22
- Monox D. I-Fly
- Member
- From: Indonesia
- Registered: 2015-12-02
- Posts: 2,000
Re: Tryin to find the mean of numbers!
Well, averages don't exist in real life... especially non-natural numbers. But all the same, averages are very interesting
What did you mean that averages don't exist in real life?
Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away.
May his adventurous soul rest in peace at heaven.
Offline
Pages: 1