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 Post subject: MEAN NUMBERPosted: Thu Feb 18, 2010 10:57 am

Joined: Sat Jun 21, 2008 11:56 am
Posts: 22
Hi

I couldn't even understand this question, pls help

What is the mean number of letters in the words of this sentence.

(a) 3
(b) 4
(c) 8
(d) 10

Thanks

Uma

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 Post subject: Posted: Thu Feb 18, 2010 11:38 am

Joined: Mon Apr 06, 2009 7:31 pm
Posts: 445
Location: East Lancs
To find the mean average, you add up all the things (in this case, letters) then divide that number by the amount of categories (in this case words)

..4....+2..+3...+4.......+6.....+2.. +7...+2.+3..+5....+2 ..+4.... +8 = 52
What is the mean number of letters in the words of this sentence.
..1....2...3....4..........5.......6....7......8..9.....10....11..12......13

52 / 13 = 4

So the answer is (b) 4

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 Post subject: Posted: Thu Feb 18, 2010 11:38 am

Joined: Thu Jan 03, 2008 8:26 am
Posts: 1322
Location: Watford, Herts
In statistics, "mean" is another word for "average". There are 13 words, with a total of 52 letters, so the average is 4.

edit: umm, like Nathair said.

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 Post subject: Posted: Thu Feb 18, 2010 4:47 pm

Joined: Thu Apr 03, 2008 12:40 pm
Posts: 298
Add all the numbers and devide by the number of numbers. It doesn't really matter if you are adding numbers or letters.

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