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Articles on Statistics

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A statistics professor used his expertise in calculating probabilities to come up with a 98 winning percentage for Tim Hortons popular Roll up the Rim contest. (Photo Illustration/The Conversation)

Here’s how I cracked Roll up the Rim and won (almost) every time

Tim Hortons changed Roll up the Rim to include a digital element. A statistician correctly predicted that playing on the last day of the contest would dramatically increase the odds of winning.
When leaders make public health decisions, such as how long social distancing should be maintained to reduce the coronavirus death toll, they often use mathematical models. The numbers aren’t always as simple as they seem. Alex Brandon/AP

Why coronavirus death rates can’t be summed up in one simple number

A lot of numbers are being tossed around about COVID-19 and what to expect in the future. They’re being used to make critical public health decisions, but they aren’t as simple as they appear.
New cases daily for COVID-19 in world and top countries. Chris55 /wikipedia

Coronavirus: country comparisons are pointless unless we account for these biases in testing

We need to update models on death rates or introduce truly random testing to understand the true impact of the coronavirus.
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.
A big discrepancy exists between the actual threat of mass shootings and the way the public perceives that threat. Tatiana Akhmetgalieva/Shutterstock.com

Have we become too paranoid about mass shootings?

You’re just as likely to be a victim of a mass shooting as you are to be struck by lightning. So why do nearly 50% of Americans say they’re afraid of being caught in the crossfire?

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