# Math Survey Question

Discussion in 'General Off-Topic Chat' started by Zetta_x, Dec 7, 2012.

?

Poll closed Dec 10, 2012.

1 vote(s)
2.0%

5 vote(s)
10.2%

0 vote(s)
0.0%

41 vote(s)
83.7%

0 vote(s)
0.0%

2 vote(s)
4.1%

0 vote(s)
0.0%

# Math Survey Question

2,140 Views
1. ### Zetta_xThe Insane Statistician

Member
4
Mar 4, 2010
If you have 4 observations that have an average of 10 and the 5th observation is 20, what is the average of all the observations. Please spoiler your answers and answer in the poll

Poll closes in 3 days

2. ### SterlingGBAtemp's Silver Hero

Member
6
Jan 22, 2009
Texas
So all 4 observations average out to 10, with the addition of 20 because of the 5th observation? Or is it that I have 4 observations, each of which averages out to a 10 and the fifth on is 20.

Actually you'll get the same answer either way now that I think about it.

3. ### Zetta_xThe Insane Statistician

Member
4
Mar 4, 2010
Thanks for the responses so far
I'm trying to figure out different logical patterns that people take when coming up to a problem that may have not seen.

4. ### FAST6191Techromancer

Reporter
20
Nov 21, 2005
[Being a bastard]
Mean, median or mode?
[/being a bastard]

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5. ### Zetta_xThe Insane Statistician

Member
4
Mar 4, 2010
I'm so glad you have mentioned that. I honestly predicted that if I were to say mean, it would blow over most people's heads. Mean is a very picky term that I feel the average would not be able to pick up one (so the mean)

6. ### Foxi4On the hunt...

Global Moderator
27
Sep 13, 2009
Gaming Grotto
That's actually pretty easy...

Warning: Spoilers inside!

Sterling likes this.
7. ### gifi4How am I a 'New Member'?

Member
3
Apr 21, 2010
Melbourne
Simple.
Warning: Spoilers inside!

8. ### IssacI

Supervisor
12
GBAtemp Patron
Issac is a Patron of GBAtemp and is helping us stay independent!

Our Patreon
Apr 10, 2004
Sweden
Warning: Spoilers inside!

Quite easy indeed. However, I got 39 / 36 on my statistics and probability exam. (not a typo)

Zetta_x likes this.
9. ### Vulpes AbnoctoDrinks, Knows Things

Former Staff
13
Jun 24, 2008
Warning: Spoilers inside!

SifJar, Minox and nando like this.
10. ### Zetta_xThe Insane Statistician

Member
4
Mar 4, 2010
I teach a statistics class and I shit you not, someone had put an average greater than the maximum value.

ouch123 likes this.
11. ### MaxternalPeanut Gallery Spokesman

Member
9
Nov 15, 2011
dang it, I just answered randomly before I saw there was actually a question in the op

Member
2
May 7, 2011
Québec
Warning: Spoilers inside!

13. ### AlexroseUntitled

Member
3
Jan 20, 2009
England
Warning: Spoilers inside!

This is literally primary school maths; why are you acting like we should spoiler this stuff?

14. ### Zetta_xThe Insane Statistician

Member
4
Mar 4, 2010
Alex, the purpose is that every vote is independent. If you show your answer, the votes have dependence amongst them. Do you know the definition of what it means for each observation to be uncorrelated?

There once was a post on facebook with elementary math (the one that had the order of operations). I think as much as 1/3 to 1/2 half got it wrong.

Thank you for being a douchebag and not put spoiler tags when you clearly see that I have asked to do so.

---

The logical step that people will miss is how you got 40. A few people look like they just took the average between 20 and 10 which is 15.

Tl;dr the arithmetic was designed to be easy, but it was not a test of arithmetic, it was a test of logic and problem solving.

15. ### TomGbatemp's Unofficial Modder

Member
2
Feb 9, 2009
New jersey
Are we just doing your HW?

16. ### SterlingGBAtemp's Silver Hero

Member
6
Jan 22, 2009
Texas
No, he's a statistics teacher. If you'd read the topic, you'd figure that out. Even if it was his homework, he wouldn't have asked us a single question this simple.

Zetta_x likes this.
17. ### TomGbatemp's Unofficial Modder

Member
2
Feb 9, 2009
New jersey
It doesn't say that in the topic, Looking at his profile you see it, not on the topic

18. ### Coto∞

Member
5
Jun 4, 2010
If you have 4 observations that have an average of 10 and the 5th observation is 20, what is the average of all the observations. Please spoiler your answers and answer in the poll

Warning: Spoilers inside!

Or

Warning: Spoilers inside!

That is, considering basis of 10 as total for every observation, or 40, being 10 for each observation, then simply adding the fifth observation, and its valuew

Zetta_x likes this.
19. ### SterlingGBAtemp's Silver Hero

Member
6
Jan 22, 2009
Texas

This says otherwise. >.>

Zetta_x likes this.
20. ### SakenGBAtemp Fan

Member
2
Sep 12, 2009
Warning: Spoilers inside!