Percent Error Practice

Front

What is percent error?

Back

Percent error is a measure of how inaccurate a measurement is, expressed as a percentage of the true value. It is calculated using the formula: Percent Error = |(Measured Value - True Value)| / True Value * 100.

Front

How do you calculate absolute error?

Back

Absolute error is the difference between the measured value and the true value. It is calculated as: Absolute Error = |Measured Value - True Value|.

Front

What is the formula for calculating percent error?

Back

The formula for calculating percent error is: Percent Error = |(Measured Value - True Value)| / True Value * 100.

Front

If Robbie measures 25 grams instead of 20 grams, what is his absolute error?

Back

Robbie's absolute error is 5 grams, calculated as |25 - 20|.

Front

What number should Robbie use for the exact amount when calculating percent error?

Back

Robbie should use 20 grams as the exact amount.

Front

If Nick estimated 60 attendees but only 45 showed up, what is the percent error?

Back

The percent error is 33%, calculated as |(60 - 45)| / 60 * 100.

Front

What was the percent error if the estimated attendance was 15,000 and the actual was 12,500?

Back

The percent error is 20%, calculated as |(15,000 - 12,500)| / 15,000 * 100.

Front

What do you multiply by to convert a decimal to a percentage?

Back

To convert a decimal to a percentage, multiply by 100.

Front

If Jennifer types 70 words per minute instead of 65, what is her absolute error?

Back

Jennifer's absolute error is 5 words per minute, calculated as |70 - 65|.

Front

What is the significance of the true value in percent error calculations?

Back

The true value is the accepted or known value that is used as a reference point for measuring accuracy.