I am working with the dataset twinData in R. I have two questions related to data wrangling.
How would I go about listing only the combinations of cohort and zygosity where the twins’ heights are significantly similar.
My prior code was to create a new variable to indicate whether the correlation coefficient between ht1 and ht2 in the particular subgroup is greater 0.5, with 95 percent confidence.
sig_twin_cor <- twinData %>%
group_by(cohort,zygosity) %>%
do(tidy( cor.test(~ ht1 + ht2, alternative = "greater" , data = . ))) %>%
arrange(desc(estimate)) %>%
mutate(Greater0.5 = ifelse(estimate>0.5,"Yes","No"))
sig_twin_cor
Second, I need to transform the dataset twinData into a narrow form using gather(). Can someone show me how to do this?
Thanks!
