Percent Change and 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 = |Estimated Value - Actual Value| / Actual Value × 100%.

Front

How do you calculate percent increase?

Back

Percent increase is calculated using the formula: Percent Increase = (New Value - Original Value) / Original Value × 100%.

Front

If Zed estimated 350 chips but found only 210, what is the percent error?

Back

67%.

Front

If Jessie estimated her cat's weight at 8 pounds and the actual weight is 10 pounds, what is the percent error?

Back

20%.

Front

What is the formula for calculating percent change?

Back

Percent Change = (New Value - Old Value) / Old Value × 100%.

Front

If the attendance for a game was estimated at 15,000 but only 12,500 attended, what is the percent error?

Back

20%.

Front

What is the percent increase if the number of people signed up for a bus trip increased from 32 to 45?

Back

41%.

Front

If the price of a ticket increases from $100 to $120, what is the percent change?

Back

20%.

Front

What does a percent error of 0% indicate?

Back

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

Front

What is the significance of a high percent error?

Back

A high percent error indicates a large discrepancy between the estimated and actual values, suggesting a need for more accurate estimation.