xodaline Posted March 31, 2018 Report Share Posted March 31, 2018 In my internal assessment I am investigating the relationship between alcohol consumption and heart disease mortality for 30 European countries. To calculate the standard deviations, and then use it to calculate the pearsons coefficient and the linear rigression line, should I use the formula for the sample or population? Thank you! Reply Link to post Share on other sites More sharing options...
kw0573 Posted April 1, 2018 Report Share Posted April 1, 2018 I think in general you would use sample standard deviation because you can't survey everyone; 1 Reply Link to post Share on other sites More sharing options...
xodaline Posted April 1, 2018 Author Report Share Posted April 1, 2018 8 hours ago, kw0573 said: I think in general you would use sample standard deviation because you can't survey everyone; I'm not doing the survey but using the database for 30 european countries, is it still applicabile this way? Reply Link to post Share on other sites More sharing options...
kw0573 Posted April 1, 2018 Report Share Posted April 1, 2018 Right, of course. I m not sure why I thought you would be surveying 30 countries. It would be population because your analysis is limited to 30 countries, ie 100% of population. Reply Link to post Share on other sites More sharing options...
xodaline Posted April 1, 2018 Author Report Share Posted April 1, 2018 1 hour ago, kw0573 said: Right, of course. I m not sure why I thought you would be surveying 30 countries. It would be population because your analysis is limited to 30 countries, ie 100% of population. Thank you! Reply Link to post Share on other sites More sharing options...
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