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#1
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RANK and CORRELATION
Greetings. I realize this is a simple statistical question, but I don't have
a statistics package (or any knowledge of statistics), but I am using EXCEL 2003. I would deeply appreciate your help because I can't figure out on my own how to do this in EXCEL. I have a column of numbers in random order (5, 33, 4, 76, 32, 46, etc.). The lower numbers are "better" than the higher numbers (they are scores on a test; higher numbers mean more mistakes). I have another column of numbers also in random order (not ranked). The lower numbers are "better" than the higher numbers (they are scores on another test; the higher the number, the more the mistakes). I want to see if there is a correlation between the two columns of test scores: that is, I want to find out if those who did well on the first test (those with lower numbers) also did well on the second test (those with lower numbers). Could you please tell me in simple English how to do this? |
#2
Posted to microsoft.public.excel.newusers
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RANK and CORRELATION
Hi Rebecca:
Excel has a built-in function to help you. See: http://office.microsoft.com/en-us/as...090231033.aspx This article also outlines the mathe behind the function. -- Gary's Student "Rebecca" wrote: Greetings. I realize this is a simple statistical question, but I don't have a statistics package (or any knowledge of statistics), but I am using EXCEL 2003. I would deeply appreciate your help because I can't figure out on my own how to do this in EXCEL. I have a column of numbers in random order (5, 33, 4, 76, 32, 46, etc.). The lower numbers are "better" than the higher numbers (they are scores on a test; higher numbers mean more mistakes). I have another column of numbers also in random order (not ranked). The lower numbers are "better" than the higher numbers (they are scores on another test; the higher the number, the more the mistakes). I want to see if there is a correlation between the two columns of test scores: that is, I want to find out if those who did well on the first test (those with lower numbers) also did well on the second test (those with lower numbers). Could you please tell me in simple English how to do this? |
#3
Posted to microsoft.public.excel.newusers
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RANK and CORRELATION
Thanks, but do I have to rank the students first. Also, the link you gave me
was not very helpful. Remember, I'm a new user. Therefore, could you explain how this should and could be done? Thanks. "Gary''s Student" wrote: Hi Rebecca: Excel has a built-in function to help you. See: http://office.microsoft.com/en-us/as...090231033.aspx This article also outlines the mathe behind the function. -- Gary's Student "Rebecca" wrote: Greetings. I realize this is a simple statistical question, but I don't have a statistics package (or any knowledge of statistics), but I am using EXCEL 2003. I would deeply appreciate your help because I can't figure out on my own how to do this in EXCEL. I have a column of numbers in random order (5, 33, 4, 76, 32, 46, etc.). The lower numbers are "better" than the higher numbers (they are scores on a test; higher numbers mean more mistakes). I have another column of numbers also in random order (not ranked). The lower numbers are "better" than the higher numbers (they are scores on another test; the higher the number, the more the mistakes). I want to see if there is a correlation between the two columns of test scores: that is, I want to find out if those who did well on the first test (those with lower numbers) also did well on the second test (those with lower numbers). Could you please tell me in simple English how to do this? |
#4
Posted to microsoft.public.excel.newusers
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RANK and CORRELATION
Post a small sample (say ten pairs) of data and I'll give your some formulae.
-- Gary''s Student "Rebecca" wrote: Thanks, but do I have to rank the students first. Also, the link you gave me was not very helpful. Remember, I'm a new user. Therefore, could you explain how this should and could be done? Thanks. "Gary''s Student" wrote: Hi Rebecca: Excel has a built-in function to help you. See: http://office.microsoft.com/en-us/as...090231033.aspx This article also outlines the mathe behind the function. -- Gary's Student "Rebecca" wrote: Greetings. I realize this is a simple statistical question, but I don't have a statistics package (or any knowledge of statistics), but I am using EXCEL 2003. I would deeply appreciate your help because I can't figure out on my own how to do this in EXCEL. I have a column of numbers in random order (5, 33, 4, 76, 32, 46, etc.). The lower numbers are "better" than the higher numbers (they are scores on a test; higher numbers mean more mistakes). I have another column of numbers also in random order (not ranked). The lower numbers are "better" than the higher numbers (they are scores on another test; the higher the number, the more the mistakes). I want to see if there is a correlation between the two columns of test scores: that is, I want to find out if those who did well on the first test (those with lower numbers) also did well on the second test (those with lower numbers). Could you please tell me in simple English how to do this? |
#5
Posted to microsoft.public.excel.newusers
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RANK and CORRELATION
24 50
32 25 33 13 50 39 109 35 51 44 28 31 53 56 38 26 In the first column, low scores are "better," and that's the case for the other column, too. Do I have to RANK the columns first before I can establish a correlation? I really appreciate your help. "Gary''s Student" wrote: Post a small sample (say ten pairs) of data and I'll give your some formulae. -- Gary''s Student "Rebecca" wrote: Thanks, but do I have to rank the students first. Also, the link you gave me was not very helpful. Remember, I'm a new user. Therefore, could you explain how this should and could be done? Thanks. "Gary''s Student" wrote: Hi Rebecca: Excel has a built-in function to help you. See: http://office.microsoft.com/en-us/as...090231033.aspx This article also outlines the mathe behind the function. -- Gary's Student "Rebecca" wrote: Greetings. I realize this is a simple statistical question, but I don't have a statistics package (or any knowledge of statistics), but I am using EXCEL 2003. I would deeply appreciate your help because I can't figure out on my own how to do this in EXCEL. I have a column of numbers in random order (5, 33, 4, 76, 32, 46, etc.). The lower numbers are "better" than the higher numbers (they are scores on a test; higher numbers mean more mistakes). I have another column of numbers also in random order (not ranked). The lower numbers are "better" than the higher numbers (they are scores on another test; the higher the number, the more the mistakes). I want to see if there is a correlation between the two columns of test scores: that is, I want to find out if those who did well on the first test (those with lower numbers) also did well on the second test (those with lower numbers). Could you please tell me in simple English how to do this? |
#6
Posted to microsoft.public.excel.newusers
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RANK and CORRELATION
Rank just tells you where a given piece of data is relative to the rest. So
in the first column 24 ranks first, 28 ranks second, 32 ranks third, etc. You can arrive at the rank just by sorting. You don't have to rank before correlating. If your data is in A1 thru B9, then: =CORREL(A1:A9,B1:B9) calculates the coefficient of correlation. For you sample this is : 0.161485681 -- Gary's Student "Rebecca" wrote: 24 50 32 25 33 13 50 39 109 35 51 44 28 31 53 56 38 26 In the first column, low scores are "better," and that's the case for the other column, too. Do I have to RANK the columns first before I can establish a correlation? I really appreciate your help. "Gary''s Student" wrote: Post a small sample (say ten pairs) of data and I'll give your some formulae. -- Gary''s Student "Rebecca" wrote: Thanks, but do I have to rank the students first. Also, the link you gave me was not very helpful. Remember, I'm a new user. Therefore, could you explain how this should and could be done? Thanks. "Gary''s Student" wrote: Hi Rebecca: Excel has a built-in function to help you. See: http://office.microsoft.com/en-us/as...090231033.aspx This article also outlines the mathe behind the function. -- Gary's Student "Rebecca" wrote: Greetings. I realize this is a simple statistical question, but I don't have a statistics package (or any knowledge of statistics), but I am using EXCEL 2003. I would deeply appreciate your help because I can't figure out on my own how to do this in EXCEL. I have a column of numbers in random order (5, 33, 4, 76, 32, 46, etc.). The lower numbers are "better" than the higher numbers (they are scores on a test; higher numbers mean more mistakes). I have another column of numbers also in random order (not ranked). The lower numbers are "better" than the higher numbers (they are scores on another test; the higher the number, the more the mistakes). I want to see if there is a correlation between the two columns of test scores: that is, I want to find out if those who did well on the first test (those with lower numbers) also did well on the second test (those with lower numbers). Could you please tell me in simple English how to do this? |
#7
Posted to microsoft.public.excel.newusers
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RANK and CORRELATION
Thanks.
"Gary''s Student" wrote: Rank just tells you where a given piece of data is relative to the rest. So in the first column 24 ranks first, 28 ranks second, 32 ranks third, etc. You can arrive at the rank just by sorting. You don't have to rank before correlating. If your data is in A1 thru B9, then: =CORREL(A1:A9,B1:B9) calculates the coefficient of correlation. For you sample this is : 0.161485681 -- Gary's Student "Rebecca" wrote: 24 50 32 25 33 13 50 39 109 35 51 44 28 31 53 56 38 26 In the first column, low scores are "better," and that's the case for the other column, too. Do I have to RANK the columns first before I can establish a correlation? I really appreciate your help. "Gary''s Student" wrote: Post a small sample (say ten pairs) of data and I'll give your some formulae. -- Gary''s Student "Rebecca" wrote: Thanks, but do I have to rank the students first. Also, the link you gave me was not very helpful. Remember, I'm a new user. Therefore, could you explain how this should and could be done? Thanks. "Gary''s Student" wrote: Hi Rebecca: Excel has a built-in function to help you. See: http://office.microsoft.com/en-us/as...090231033.aspx This article also outlines the mathe behind the function. -- Gary's Student "Rebecca" wrote: Greetings. I realize this is a simple statistical question, but I don't have a statistics package (or any knowledge of statistics), but I am using EXCEL 2003. I would deeply appreciate your help because I can't figure out on my own how to do this in EXCEL. I have a column of numbers in random order (5, 33, 4, 76, 32, 46, etc.). The lower numbers are "better" than the higher numbers (they are scores on a test; higher numbers mean more mistakes). I have another column of numbers also in random order (not ranked). The lower numbers are "better" than the higher numbers (they are scores on another test; the higher the number, the more the mistakes). I want to see if there is a correlation between the two columns of test scores: that is, I want to find out if those who did well on the first test (those with lower numbers) also did well on the second test (those with lower numbers). Could you please tell me in simple English how to do this? |
#8
Posted to microsoft.public.excel.newusers
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RANK and CORRELATION
Your are very welcome
-- Gary's Student "Gary''s Student" wrote: Rank just tells you where a given piece of data is relative to the rest. So in the first column 24 ranks first, 28 ranks second, 32 ranks third, etc. You can arrive at the rank just by sorting. You don't have to rank before correlating. If your data is in A1 thru B9, then: =CORREL(A1:A9,B1:B9) calculates the coefficient of correlation. For you sample this is : 0.161485681 -- Gary's Student "Rebecca" wrote: 24 50 32 25 33 13 50 39 109 35 51 44 28 31 53 56 38 26 In the first column, low scores are "better," and that's the case for the other column, too. Do I have to RANK the columns first before I can establish a correlation? I really appreciate your help. "Gary''s Student" wrote: Post a small sample (say ten pairs) of data and I'll give your some formulae. -- Gary''s Student "Rebecca" wrote: Thanks, but do I have to rank the students first. Also, the link you gave me was not very helpful. Remember, I'm a new user. Therefore, could you explain how this should and could be done? Thanks. "Gary''s Student" wrote: Hi Rebecca: Excel has a built-in function to help you. See: http://office.microsoft.com/en-us/as...090231033.aspx This article also outlines the mathe behind the function. -- Gary's Student "Rebecca" wrote: Greetings. I realize this is a simple statistical question, but I don't have a statistics package (or any knowledge of statistics), but I am using EXCEL 2003. I would deeply appreciate your help because I can't figure out on my own how to do this in EXCEL. I have a column of numbers in random order (5, 33, 4, 76, 32, 46, etc.). The lower numbers are "better" than the higher numbers (they are scores on a test; higher numbers mean more mistakes). I have another column of numbers also in random order (not ranked). The lower numbers are "better" than the higher numbers (they are scores on another test; the higher the number, the more the mistakes). I want to see if there is a correlation between the two columns of test scores: that is, I want to find out if those who did well on the first test (those with lower numbers) also did well on the second test (those with lower numbers). Could you please tell me in simple English how to do this? |
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