Percent of Changer/Percent of Error

Front

What is percent of change?

Back

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

Front

How do you calculate percent of change?

Back

Percent of change = ((New Value - Original Value) / Original Value) x 100.

Front

What does a positive percent of change indicate?

Back

A positive percent of change indicates an increase in value.

Front

What does a negative percent of change indicate?

Back

A negative percent of change indicates a decrease in value.

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.

Front

How do you calculate percent error?

Back

Percent error = (|Estimated Value - Actual Value| / Actual Value) x 100.

Front

What is absolute error?

Back

Absolute error is the difference between the estimated value and the actual value.

Front

How do you find the absolute error?

Back

Absolute error = |Estimated Value - Actual Value|.

Front

If a car's value decreases from $9559 to $8500, what is the percent of change?

Back

Percent of change = ((8500 - 9559) / 9559) x 100 = -11.08% (decrease).

Front

If 72 people received speeding tickets one week and 36 the next, what is the percent of change?

Back

Percent of change = ((36 - 72) / 72) x 100 = -50% (decrease).