Hello everyone, in this question my fate of having a good career position is dependent.plz help. I am beginner to R as well.
I have dataset pf 7147 observations. I need to exclude twins . In the twin variable I have 155twins, 32 Na and 6960 normal observations. So i run
data <- subset(m,F12v081==1)
this code to exclude 155 twins. So the result should be 6992 but the result gives me 6960 which means the code deleted the na. So plz help me how not to delete na.
Also for this code I need help
data <- subset(data,C6631B_hscrp <= 10)