lewisnadasurf1 4:09 Thu Jan 28
Maths Question
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Right.
Brentford started with 6 left footed players in their Starting XI last night (prob a record, but doubt these are counted).
From google, the odds of being left footed in general are 12.1% (just use that as a yard stick, no caveats)
So what are the odds on their being 6 out of 11 players being left footed?
Can anyone work it out?
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Replies - In Chronological Order ( Show Newest Messages First)
twoleftfeet
4:12 Thu Jan 28
Re: Maths Question
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Is it really only 12.1%?
I’m left footed but right handed, what are those odds?
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Hello Mrs. Jones
4:15 Thu Jan 28
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If it takes a man a week to walk a fortnight how many apples in a barrel of grapes
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Heath Hammer
4:15 Thu Jan 28
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12% to power 6?
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Mr Kenzo
4:15 Thu Jan 28
Re: Maths Question
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Ask Goose, he is home schooling at the moment, i'm sure he can help you out
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lewisnadasurf1
4:16 Thu Jan 28
Re: Maths Question
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@twoleftfeet
on my travels i saw the odds of being right handed and left footed are about 2%
the odds on being left handed and left footed are about 60%
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Faux Bare
4:29 Thu Jan 28
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I wouldn’t recommend asking goose anything. He doesn’t know what day it is.
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Far Cough
4:32 Thu Jan 28
Re: Maths Question
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A=π r2
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Mad Dog
4:36 Thu Jan 28
Re: Maths Question
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0.121 to the power 6
X
0.879 to the power 5
X
462 (different combinations)
You can get the number of combinations on a calculator using then choose function or by using pascals triangle
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bill green
4:38 Thu Jan 28
Re: Maths Question
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cant remember my statistics o level but the chances are prob higher than the general population as football will encourage left footed players
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Mad Dog
4:39 Thu Jan 28
Re: Maths Question
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0.121 being the decimal multiplier for 12.1%
The final answer is ....
0.076%
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Mad Dog
4:40 Thu Jan 28
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Maths teacher btw.
This is well beyond even GCSE maths
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geoffpikey
4:48 Thu Jan 28
Re: Maths Question
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1314 to 1?
Lump ON! Taking account of the lesser possibility of it happening twice...
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lewisnadasurf1
4:48 Thu Jan 28
Re: Maths Question
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Thanks Mad Dog, appreicate it.
It is my own question as i wanted to know the odds. I salute you!
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geoffpikey
4:50 Thu Jan 28
Re: Maths Question
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We're any of them a left back we can buy for £39m? :-)
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lewisnadasurf1
4:53 Thu Jan 28
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Rico Henry is def prem quality.
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gph
4:55 Thu Jan 28
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"This is well beyond even GCSE maths"
Really?
Because I went to a shit school (and had to go to a better one to do A Levels), I only did CSE Maths. Only the top grade of a CSE was equal to an O Level (the third grade of that).
But I'm pretty sure we did the binomial theorem* in the CSE.
*As applied perfectly by Mad Dog
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atb trev
4:56 Thu Jan 28
Re: Maths Question
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Mad dogs answer is the correct answer for finding 6 left footed people in a random sample of 11 people in the population.
That is not the same as the chances of 6 left footed players in a game of football. Most teams start with at least 2.
If you really wanted to find out the real world chances of finding 6 left footed football players in the starting 11 of a randomly selected game of football you'd need to use a statistics based approach rather than a probabilities based approach. i.e find the number of left footed players in a starting line up in your sample of games. Then divide the occurrences of 6 in the starting lineup by the number of games in your sample.
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lewisnadasurf1
5:00 Thu Jan 28
Re: Maths Question
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Thanks - yes the question was asked on a forum about whether this was a record - the obvious caveat being you're right - football teams are more likely to have left footed players - lowering the 1 in 1400. meaning the odds already are not that high and its likely that some team has started with more lefties in their team than the 6 brentford started last night.
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Mad Dog
5:15 Thu Jan 28
Re: Maths Question
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OK then if we take into account 2 are always left footed we multiply by 126.
However if we then take into account 2 are usually right footed then we multiply by 35 (making it in effect 4 players from 7) including 2 constants on either wing
Making it 0.51%
.121^4 * .879^3 * 35
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gph
5:29 Thu Jan 28
Re: Maths Question
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I haven't read this
https://www.sheffield.ac.uk/polopoly_fs/1.105580!/file/left-foot-papermay2009.pdf
but the headline seems to be that 22% of footballers across the top 5 European Leagues are left-footed.
As it has three categories, left-, right- and, er, ambi-footed, if the members of the third category were forced to choose, that would push up the number left-footed players up even further.
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