You are interested in the relationship between unemployment city variables, such as city size and civic engagement and family very well, such as divorce rate in birth rate, you collect data on 100 different houses in 100 towns and cities. The following table shows the bivariate correlation Pearson's are for each combination of variables. Correlation in a TRICES are very useful because they summarize the relationship between multiple variables, allowing you to look at multiple relationships simultaneously. You'll find a correlation matrix the most research papers. To orient yourself first, find the correlation of coefficient between civic engagement and birthrate