percent error

Front

What is percent error?

Back

Percent error is a measure of how inaccurate a measurement is, expressed as a percentage of the difference between the measured value and the actual value.

Front

How do you calculate percent error?

Back

Percent error = |(Measured Value - Actual Value)| / |Actual Value| × 100%.

Front

If you estimated a value of 50 and the actual value is 60, what is the percent error?

Back

Percent error = |(50 - 60)| / |60| × 100% = 16.67%.

Front

What does a percent error of 0% indicate?

Back

A percent error of 0% indicates that the measured value is exactly equal to the actual value.

Front

If a student predicts 80 points on a test but scores 70, what is the percent error?

Back

Percent error = |(80 - 70)| / |80| × 100% = 12.5%.

Front

What is the percent error if the actual value is 100 and the measured value is 90?

Back

Percent error = |(90 - 100)| / |100| × 100% = 10%.

Front

Why is it important to calculate percent error in experiments?

Back

Calculating percent error helps to assess the accuracy of measurements and the reliability of experimental results.

Front

If you predict 200 attendees at an event but only 150 show up, what is the percent error?

Back

Percent error = |(200 - 150)| / |200| × 100% = 25%.

Front

What is the percent error if you estimate a distance of 300 meters but the actual distance is 250 meters?

Back

Percent error = |(300 - 250)| / |250| × 100% = 20%.

Front

If a recipe calls for 2 cups of sugar but you use 1.5 cups, what is the percent error?

Back

Percent error = |(2 - 1.5)| / |2| × 100% = 25%.