Story Name: Beef Council Check-off
Datafile Name: Beef Council Check-off
Abstract: Average size of farm (SIZE) and percent of farms with sales of $100,000 or
more dominate the regression of percent of farmers voting yes for the American
Beef Council check-off (YES) on characteristics of farms and operators by
counties in Montana. In fact, there is a strong interaction of these factors on
the percentage approval. We advise standardizing the dependent variable (YES)
and the two main variables (SIZE and SALE). Then calculate the product term. The
standardized regression coefficients for the main variables will indicate
the standardized slopes at mean X and the product term will indicate the change
in standardized slope per standard deviation unit of the other variable.