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ferdrox
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#1
Report Thread starter 16 years ago
#1
:confused: I can't remember how to rank if you've got more than 1 of the same data using spearman's rank!
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riffraff
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#2
Report 16 years ago
#2
(Original post by ferdrox)
:confused: I can't remember how to rank if you've got more than 1 of the same data using spearman's rank!
this should be in the academic forum- but you have three choices- you can either average the ranks if the numbers were different, or you can take the highest rank if all were different, or you can take the lowest rank. It doesn't matter much but I would go for the average. in any case it is just one more thing you can comment on in your writeup- i.e. what you did and why good luck
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Zapsta
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#3
Report 16 years ago
#3
(Original post by ferdrox)
:confused: I can't remember how to rank if you've got more than 1 of the same data using spearman's rank!
Wah?! You have two data sets, you rank both of them from highest to lowest or lowest to highest (doesn't matter which, as long as you do the same to both). So for example if it was scores on a maths test and scores on an English test, you'd give the highest score on each test a rank of one, the second highest a rank of two, etc. You then find the differences between the ranks for each pupil and square it. I can't remember the exact formula but thats how the ranking works.
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ferdrox
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#4
Report Thread starter 16 years ago
#4
but how d'u get the rank if theres more than 1. like say theres 2 of th same thing.
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Zapsta
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#5
Report 16 years ago
#5
(Original post by ferdrox)
but how d'u get the rank if theres more than 1. like say theres 2 of th same thing.
Ah, I htink I see now. If there's two you go halfway between the ranks. So for example if you have two pieces of data sharing the highest score you give them both a rank of one and a half. Then you miss out 2 for the next ranking and go straight to 3.
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ferdrox
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#6
Report Thread starter 16 years ago
#6
ok thnx!
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