why is it difficult to measure variables independently at multiple sites when each variable is independently sampled, how many replicates for each variable? why are variables measured separately why does each replicate of a variable need to be paired for a correlation test? why are variables tested for correlation what is the correlation between replicates of a variable and variable a? how to measure correlations at multiple sites with a single replicate what is the difference between a replicate and a replicate of an individual variable how to measure the correlation of different variables how do i test correlation in resampling methods how to test correlation when each variable is measured independently how does a replicate test for correlation when a variable is measured by replicates why is each variable measured individually? when variable is measured in more than one replicate, the correlation between the variables is when each replicate is independently sampled, what is the problem why should a variable be replicated in an independent test? how to assess correlation of variables? how to predict correlation when the variable is measured independently? can replications be tested for correlation?