Statistics for Health Research Tutorial 9: Chi Square, Risk Difference, NNT, Risk Ratio, Odds Ratio

[@stephanm3032]

I love these videos. Thank you for your help.

[@ziemamadoucoulibaly2305]

Hi, please let's me know,how to calculate the cover(X,y) with R??? I need to know it

[@marinstatlectures]

hi, I'm not sure what you mean by "cover" of X and Y. if you're talking about covariance, then the command is *cov(x,y)* , and if you are referring to something else, please clarify and i can try to help