$5\mathrm{.}10.$ A convenience store is considering changing its layout to encourage impulse buying. The triangular flow matrix below gives the measure of association between different product groups $($e$.$g$.,$ beer, milk, magazines$).$ A plus sign $(+)$ indicates a high association, such as between beer and peanuts; a minus sign $(-)$ indicates a repulsion, such as between beer and milk; and a zero $(0)$ indicates no association.

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