Question: When we analyze data for the census tracts in the greater Los Angeles area, we find no significant correlation between median tax bill and median

When we analyze data for the census tracts in the greater Los Angeles area, we find no significant correlation between median tax bill and median lot size. Yet a considerable positive correlation occurs when we control for the percentage of the tract used for business. Explain how the percentage of the tract used for businesses could be a suppressor variable, if it is positively correlated with median tax bill and negatively correlated with median lot size.

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