how to measure correlation in spss what kind of data do you need to compare time series how to check correlation determining whether a time series is causal how to predict correlations on a time series why does a correlation need to be tested between region data why do you need a cross-table when correlating two data sets why is correlation a useful idea can spss detect correlations which statement makes sense when you correlating time series if a time series includes 20 regions, how can I prove the correlation? how to corroborate correlation with time series why is it important to correlating time series how to tell if a time series is causal when do you need to use a correlation tool how can i check if a time series is correlated can you check the correlation of time series why do I need to correlate time series how many regions of a region can correlation be a measure of? how much time in a country for correlation