12/5 model problems Percent change percent error

Front

What is percent change?

Back

Percent change is a measure of how much a quantity has increased or decreased relative to its original amount, expressed as a percentage.

Front

How do you calculate percent change?

Back

Percent Change = ((New Amount - Original Amount) / Original Amount) x 100.

Front

What is the formula for percent error?

Back

Percent Error = (|Measured Value - Actual Value| / Actual Value) x 100.

Front

If the original amount is 16 and the new amount is 11, what is the percent change?

Back

31% decrease.

Front

If a student measures a length of 12 cm but the actual length is 14.25 cm, what is the percent error?

Back

15.79%.

Front

What does a percent decrease indicate?

Back

A percent decrease indicates how much a value has reduced compared to its original value.

Front

What does a percent increase indicate?

Back

A percent increase indicates how much a value has grown compared to its original value.

Front

If a game originally costs $66.64 and is now $29.99, what is the percent change?

Back

54.9% decrease.

Front

What is the significance of calculating percent error in experiments?

Back

Calculating percent error helps to assess the accuracy of measurements compared to the actual value.

Front

If the estimated deer population is 17,600 and the actual count is 21,300, what is the percent error?

Back

17.4%.