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When interpreting a correlation coefficient it is important to look at?
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What is an example of biserial correlation coefficient?
look at: http://www.upa.pdx.edu/IOA/newsom/pa551/lectur15.htm
What is coefficient look like?
Because a coefficient is a number that multiplies a variable, it might look like: 2a, 2 is the coefficient -d, -1 is the coeffcient
What is Karl pearsons correlation co-efficient?
Pearson's correlation coefficient, also known as the product moment correlation coefficient (PMCC), and denoted by r, is a measure of linear agreement between two random variable. It can take any value from -1 to +1. +1 indicates a perfect positive linear relationship between the two variables, a value of 0 implies no linear relationship whereas a value of -1 shows a perfect negative linear relationship. A low (or 0) correlation does not imply that the variables are unrelated: it simply means a there is no linear relationship: a symmetric relationship will give a very low or zero value for r.The browser which we are compelled to use is not suited for any serious mathematical answer and I suggest that you look up Wikipedia for the formula to calculate r.
Why do researchers use correlation?
To look for relationships between the data being studied.
What does a negative correlation look like?
it looks like dots on a graph going left and down \
Correlation coefficient is the measure of?
Correlation coefficient is a measure of the strength and direction of a relationship between two variables. It quantifies how closely the two variables are related and ranges from -1 (perfect negative correlation) to 1 (perfect positive correlation), with 0 indicating no correlation.
What is an example of biserial correlation coefficient?
look at: http://www.upa.pdx.edu/IOA/newsom/pa551/lectur15.htm
What are important things to look for when interpreting nutrition information provided on labeled food labels?
if there is any fat or poisining
What is coefficient look like?
Because a coefficient is a number that multiplies a variable, it might look like: 2a, 2 is the coefficient -d, -1 is the coeffcient
What are important things to look for when interpreting nutrition information how might this information be used to improve nutrition?
if you can't pronounce it or don't have any idea what it is you probably shouldn't be eating it.
What is Karl pearsons correlation co-efficient?
Pearson's correlation coefficient, also known as the product moment correlation coefficient (PMCC), and denoted by r, is a measure of linear agreement between two random variable. It can take any value from -1 to +1. +1 indicates a perfect positive linear relationship between the two variables, a value of 0 implies no linear relationship whereas a value of -1 shows a perfect negative linear relationship. A low (or 0) correlation does not imply that the variables are unrelated: it simply means a there is no linear relationship: a symmetric relationship will give a very low or zero value for r.The browser which we are compelled to use is not suited for any serious mathematical answer and I suggest that you look up Wikipedia for the formula to calculate r.
What would a strong association but weak correlation look like?
If the form is nonlinear (like if the data is in the shape of a parabola) then there could be a strong association and weak correlation.
A way to look at how one set of data is related to another is called?
Correlation ~
Why do researchers use correlation?
To look for relationships between the data being studied.
What is positive correlation and negative correlation?
Positive correletion between x and y means that x=ay+b, with a>0 so tha as y increases, so does the x. Now, negative correlation is the same, but with a<0 so that as y increases, x decreases. You have to be careful with the value of correlation coefficient it takes values in [-1,1]. values near 1(or -1) mean strong positive(or negative for -1) linear relation between x and y.
What does a negative correlation look like?
it looks like dots on a graph going left and down \
What does a scatter plot with strong positive correlation look like?
The line that connects the dots is relatively straight.
