# Sorry if the question is confusing. Question is in the description.

Posted by: Mathgeekjoe

So lets say I have a population of shapes, 70% are quadrilateral. 30% are triangles. Now lets say there are shapes that are regular polygons. 60% of regular polygons are squares. 40% of regular polygons are equilateral triangles. Now here comes the question. Which type of shape is more likely to be a regular polygon?

• Triangles

• Since it appears the question focuses on how we interpret that last question you posted, I'll guess you meant for use to compare the probability of regular GIVEN quadrilateral and the probability of regular GIVEN triangle. For the proof of why triangle's probability is higher: http://pastebin.com/026YxurZ

(Maximum 900 words)
TBR says2015-05-02T22:11:39.6326808-05:00
MGJ... Still working on this? I may mess with this in the morning when my brain is fresh.
Mathgeekjoe says2015-05-02T22:14:00.7364898-05:00
A regular polygon is a polygon that is equiangular (all angles are equal in measure) and equilateral (all sides have the same length).
Mathgeekjoe says2015-05-02T22:14:29.0040522-05:00
@TBR I trying to figure out how many people take the question differently.
Mathgeekjoe says2015-05-02T22:14:52.8784724-05:00
I *am* trying
Varrack says2015-05-02T22:17:57.6411270-05:00
Wait. Are there two sets of shapes?
Mathgeekjoe says2015-05-02T22:18:54.8686792-05:00
I have a population of shapes. 70% are quadrilateral, 30% are triangle.
Varrack says2015-05-02T22:25:03.2769280-05:00
"Now lets say there are shapes that are regular polygons. 60% of regular polygons are squares. 40% of regular polygons are equilateral triangles." What is the relationship between the regular polygons and the population of shapes?
Mathgeekjoe says2015-05-02T22:26:30.5253659-05:00
Some shapes are regular polygons. Some are not.
Diqiucun_Cunmin says2015-05-02T22:26:59.0770982-05:00
Do you want us to compare the probability of quadrilateral AND regular and the probability of triangle AND regular, or the probability of regular GIVEN quadrilateral and the probability of regular GIVEN triangle? (Sorry for the clumsy sentences; Maths symbols don't pass through the filter, even after I removed the intersection signs.)
Mathgeekjoe says2015-05-02T22:28:51.4455090-05:00
"Which type of shape is more likely to be a regular polygon?"
heil62 says2015-05-02T22:51:12.1577671-05:00
So forty percent divided by thirty percent is greater than 60percent divided by 70 percent
heil62 says2015-05-02T22:55:43.0085698-05:00
Diqiucun I disagree. If I had 990 whites and 10 blacks and and 70% of crime was caused by blacks and I had 10 crimes, then I would expect seven of ten of the blacks to have been criminals but only 3 of the 990 whites to be criminals.
heil62 says2015-05-02T22:56:02.6960222-05:00
So blacks would be more likely to commit crimes
Mathgeekjoe says2015-05-02T22:56:38.9099476-05:00
"So blacks would be more likely to commit crimes" Heil can you keep that out of this.
heil62 says2015-05-02T22:56:58.2086425-05:00
And the thing is is it doesn't matter if 20 or 30 or even 200 crimes were committed as long as the 70/30 ratio is maintained and the 990/10 ratio is maintained blacks will commit more crimes
heil62 says2015-05-02T23:00:04.8267264-05:00
Oh my bad i inverted the proportions, one group would have to have above 50% for both
heil62 says2015-05-02T23:00:20.3801258-05:00
Above 50% population and rate
Mathgeekjoe says2015-05-02T23:02:26.6234663-05:00
HEIL if you are going to make a statistical point, use triangles and squares, we don't need any political views in this poll.
heil62 says2015-05-02T23:04:17.3349058-05:00
Fine I won't mentions names of races. If I have 990 of race A and 10 of race B. 8% of crimes were commmitted by race A and 2% committed by race B. For the sake of comparison let's say we have 10 crimes. Then 8 crimes will be from race A and 2 from race B. Eight divided by ninehundred ninety is less than two divided by ten. The thing is this works for all amounts of crime number whether than be 20 or 30 crimes.
Mathgeekjoe says2015-05-02T23:05:45.7825743-05:00
Can you keep humans or possible human characteristics out of it. There is a reason WHY I USED SHAPES.
heil63 says2015-05-02T23:11:38.2134144-05:00
But it doesn't matter whether i use race or shapes, it's the same mathematical concept
Mathgeekjoe says2015-05-02T23:12:39.6345906-05:00
It matters because this poll was supposed to be exempt from political biases.
heil63 says2015-05-02T23:13:52.9784728-05:00
If I have 990 of A and 10 B. 8% of a group of letter is A and 2% of those letters are B. For the sake of comparison let's say we have 10 letters in that group. Then 8 letters will be from A and 2 from B. Eight divided by nine hundred ninety is less than two divided by ten. So that means more percent of B will be that letter group. Happy?
Varrack says2015-05-02T23:14:02.7446688-05:00
heil63 says2015-05-02T23:16:18.5286058-05:00
Besides you kinda need to find a way to incorporate math into real life application
heil63 says2015-05-02T23:25:11.4472418-05:00
Besides "@TBR I trying to figure out how many people take the question differently." I did as you said to take it differently. I took the question in a racial sense
Diqiucun_Cunmin says2015-05-02T23:29:39.0218722-05:00
@heil: You actually made a point. I've just realised I've misread the description...
heil63 says2015-05-02T23:41:46.1410084-05:00