+91 | Red | Blue | Green | Total | |
| Small | 7 | 1 | 3 | 11 |
| Medium | 8 | 5 | 10 | 23 |
| Large | 3 | 1 | 2 | 6 |
| Total | 18 | 7 | 15 | 40 |
What is the conditional relative frequency of a given green being small?
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At first, I thought it would be 3/11 or .27 repeating, but apparently that's wrong.
If possible, could someone explain why my answer is wrong and their's is right? Am I wrong because 3/11 represents only a portion of the green shirts instead of all of them? Would it be 3/15 because it represents all of the green shirts?
Thanks a bunch,
Thea
+129852
all-them-marvel-feels....I'm not well-versed in this, but i believe the answer is given by the number of occurences in each separate category, divided by the the total number of occurences.....
So we have .... [ small, green ] / [ total occurences ] = 3 / 40
Each of these fractional occurences in each separate category would, when added together, equal 1 .....this makes sense... and note that the "total" fractional occurences with respect to the colors would be [ 18 + 7 + 15 ] /40 =40/40 = 1 ...which also makes sense....the same result would be obtained with respect to the totals for the sizes.. [ 11 + 23 + 6] / 40 = 40 / 40 = 1
+118677 Well I am no expert either but I would go for 3/15
Because it says that the ball is green and only 15 fit that description.
The chance of it being small as well is 3/15
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+129852 Yep...after reading the question again, I believe Melody's answer is the correct one......disregard mine....it would only be correct if we were talking about all the occurences...not just the green ones....
+91 ~ Sorry for taking so long to check your awswers. I emailed a friend who took the same test and 3/15 was marked correct on hers, so I went with that. Thanks for the help!
