# Correlation coefficients

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#1
HI,
I have worked out the coefficient correlation for 2 sets of data and they are exactly the same.WHAT does this mean? Someone please help I got an essay due today on this stuff!! Thanks
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1 year ago
#2
(Original post by Big Hypothalamus)
HI,
I have worked out the coefficient correlation for 2 sets of data and they are exactly the same.WHAT does this mean? Someone please help I got an essay due today on this stuff!! Thanks
Depends on what the two data sets are. Is there a relationship between them?
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#3
pulse
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#4
pulse & bmi
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1 year ago
#5
(Original post by Big Hypothalamus)
pulse & bmi
Ive no idea what those data sets are?
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1 year ago
#6
for two different data sets and models it tells you nothing
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1 year ago
#7
(Original post by Meowstic)
for two different data sets and models it tells you nothing
Its hard to really give advice then. If the two correlation coefficients are really identical, it could be because theyre transformations of each other, though that does not sound the case with the names of the dara sets.
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1 year ago
#8
(Original post by Big Hypothalamus)
pulse & bmi
A correlation coefficient is a function of two variables: so if you have two datasets, once called "pulse" and the other called "bmi", what is being correlated with what in each dataset?
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#9
SO the large data set for mei a level maths- the one about americans and their health. There are 2 colomns of bmi and pulse of people who have been surveyed.
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#10
Does anyone know if the large data set is continuous or discrete data??
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1 year ago
#11
(Original post by Big Hypothalamus)
SO the large data set for mei a level maths- the one about americans and their health. There are 2 colomns of bmi and pulse of people who have been surveyed.
I'm looking at this dataset (the 2021 large dataset 3) , and I can see one column with "BMI" and one column with "pulse", not two columns of each. So, I repeat, what are you correlating with what?
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#12
the bmi for men with the pulse for men
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1 year ago
#13
(Original post by Big Hypothalamus)
the bmi for men with the pulse for men
So how do you get 2 correlation coeffs?
cort(bmi & pulse) and corr(pulse & bmi)?
If so, the correlation coefficient is the same, irrespective of which is x and which is y.
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