Odd Mean

Probability Level 1

The first 5 odd positive integers are

1 , 3 , 5 , 7 , 9. 1, 3, 5, 7, 9.

What is their mean?

3 4 5 6

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Arron Kau by Arron Kau

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6 solutions

Iranna Hubballi
Mar 17, 2014

1+3+5+7+9=25 25/5=5

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25/5=5

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Lakshmi Tumati
Jan 4, 2014

First, you add 1+3+5+7+9, and you get 25. Then you divide 25 by the number of numbers, which in this case is 5, and you get your answer as 5. The correct answer is 5.

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Shubham Thakkar
Nov 24, 2013

1+3+5+7+9=25 We had 5 numbers so 25/5 = guess what? '5'!

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Bryan Mason
Nov 18, 2013

(1+3+5+7+9)/(5) divide it by five because five is the number of values

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it is simple .. the mean of odd nos is no of odd nos considered from 1

Dharin Shah - 7 years, 6 months ago
Abdul Malik
Nov 17, 2013

Just check for the middle n# and it will be your mean

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Moderator note:

As pointed out by Morgan, this solution isn't correct.

This method does not work. It will give the correct answer, yes but this is how you find the median not the mean. The mean is defined as the Sum of all the terms divided by the number of terms.

Morgan Tobin - 7 years, 6 months ago

What is special about the numbers we are using that lets us choose the middle number?

Lino Demasi - 7 years, 6 months ago

Is that so..? Then answer this.... 1,3,7,9 and sure search 4 the middle term.

Shubham Thakkar - 7 years, 6 months ago

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