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By adding a ‘digital roll’ to its iconic game, Tim Hortons’ Roll up the Rim contest now has some statistical similarities to slot machines. (Photo Illustration/The Conversation)

Roll up the Rim: How COVID-19 has changed the contest — and maybe your odds of winning

The Tim Hortons coffee chain has made some changes to its iconic Roll up the Rim contest, including the addition of "digital rolls." A statistician explains how this changes the odds of winning.
Most Canadians have a higher probability of dying of heart disease than winning something in the McDonald’s Monopoly game. THE CONVERSATION CANADA/Scott White

McDonald’s Monopoly: A statistician explains the real odds of winning

McDonald's Canada has brought back its popular Monopoly game. A statistician explains the odds of winning the top prizes and how that compares to the odds we confront in everyday life.
People are bad at weighing risk, which is why so many Americans don’t get flu shots. AP Photo/David Goldman

How to deal with life’s risks more rationally

People have to make countless decisions on a daily basis that involve some degree of risk, from boarding a plane to crossing the street. The trouble is most of us don't weigh risk well.

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