Perceived and Calculated Risk Flashcards

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What does the word "risk" mean in science?

Risk is the chance that something will cause harm.

A calculated risk is the level of risk worked out from data using numbers.

A perceived risk is the level of risk that a person feels something has.

It can be written as a fraction, a percentage or as "1 in so many".

Divide the number of harmful outcomes by the total number of cases or people.

The risk is 2 out of 100, which is 2%.

Perceived risk is based on feelings and beliefs, not just on the numbers and data.

People often see a risk as lower if they feel they can control it.

They may focus on rare, dramatic events, so people think these risks are bigger than they are.

Many people feel flying is riskier, but calculated risk shows driving is more likely to cause harm.