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1.6 Percent Error. What is percent error?. Example 1. Example 2. Example 3. For my astronomy students! (Current and future…seriously, this is an awesome class!) Around 200 BC, the Greek philosopher Eratosthenes calculated the circumference of Earth…without a tape measure! - PowerPoint PPT Presentation

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Page 1: 1.6 Percent Error
Page 2: 1.6 Percent Error

What is percent error?

Page 3: 1.6 Percent Error

Example 1

Page 4: 1.6 Percent Error

Example 2

Page 5: 1.6 Percent Error

Example 3• For my astronomy students! (Current and future…

seriously, this is an awesome class!)• Around 200 BC, the Greek philosopher Eratosthenes

calculated the circumference of Earth…without a tape measure!

• He calculated it to be 24, 428 miles• The actual circumference is 24, 908 miles• What was his percent error?• Percent error= (mv-av)/av x 100%=• (24, 428 miles - 24, 908 miles)/ 24, 908 miles x 100%=• (-480. miles)/ 24, 908 miles x 100%=• -1.93%• That’s pretty a pretty good measurement without a

tape measure!


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