Meanie Beanie

Probability Level 1

The smallest six positive even integers are

2 , 4 , 6 , 8 , 10 , 12. 2, 4, 6, 8, 10, 12.

What is their mean?

4 5 6 7

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Arron Kau by Arron Kau

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12 solutions

Nick Steichen
Nov 4, 2013

2+4=6 6+6=12 12+8=20 20+10=30 30+12=42 42/6=7

3 Helpful 0 Interesting 0 Brilliant 0 Confused

The mean of a series of numbers = S u m o f t h e d a t a v a l u e s T o t a l n u m b e r o f t h e d a t a v a l u e s \frac {Sum of the data values}{Total number of the data values} So for this problem, m e a n = 2 + 4 + 6 + 8 + 10 + 12 6 mean= \frac{2+4+6+8+10+12}{6} ⇒ m e a n = 42 6 \Rightarrow mean= \frac{42}{6} ⇒ m e a n = 7 \Rightarrow mean=7

2 Helpful 0 Interesting 0 Brilliant 0 Confused

no need to add all terms,, co number of terms is even. so take middle pair such as 6,8. so 7 is the middle value.. but it is possible where there is arthematic progression

B Kishore - 7 years, 7 months ago
Devesh Rai
Nov 3, 2013

HELLO, WE KNOW THAT MEAN = SUM OF THE GIVEN TERMS / NUMBER OF TERMS. SO 2+4+6+8+10+12 / 6 SO WE GET 7. BY THIS THE MEAN OF THE DATA IS 7.

1 Helpful 0 Interesting 0 Brilliant 0 Confused

why divided by 6 ?

Syafira Mardhiyah - 7 years, 7 months ago

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get 6 terms

Kai Yieh Wong - 7 years, 7 months ago
Pranaii Bomma
Mar 21, 2014

2+4+6+8+10+12=42 divide 42/6 why only 6 because there are totally 6 numbers

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Bryan Dellariarte
Mar 17, 2014

same solution

0 Helpful 0 Interesting 0 Brilliant 0 Confused

42/6=7

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Kajal Jain
Feb 27, 2014

2+4+6+8+10+12=42 & 42/6=7

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Lakshmi Tumati
Jan 4, 2014

First, you add 2+4+6+8+10+12, and you get 42. Then you divide 42 by 6, and you get 7. The correct answer is 7.

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Vaz Julhy
Nov 9, 2013

2+4+6+8++10+12=42 divide by its count which is 6 so the result is 7

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Murtaza Moiz
Nov 6, 2013

7

0 Helpful 0 Interesting 0 Brilliant 0 Confused

(2+4+6+8+10+12) / 6 = 42 / 6 = 7

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Sakshi Jain
Nov 5, 2013

2+4+6+8+10+12 / 6

0 Helpful 0 Interesting 0 Brilliant 0 Confused

take middle pair such as 6&8. so answer is 7

B Kishore - 7 years, 7 months ago

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