Percent of Change and Percent Error Quiz

What is the definition of percent of change?

• The ratio that compares the change in a quantity to the original amount

• The ratio that compares the change in a quantity to the increased amount

• The ratio that compares the change in a quantity to the new amount

• The ratio that compares the change in a quantity to the final amount

In the example with the sneakers at Kohl's, what was the percent of change in the price of the shoes?

• 20%

• 15%

• 30%

• 25%

What is the formula for calculating percent of change?

• ∆/Original

• ∆/New

What is the definition of percent error?

• The ratio that compares the inaccuracy of a guess to the guess itself

• The ratio that compares the inaccuracy of a guess to the actual amount

In the example with Leroy and the fire hose, what was the percent error in his guess?

• 5%

• 8%

• 10%

• 15%

What is the formula for calculating percent error?

• ∆/Guess

• ∆/Actual

What is the percent of change if a quantity increases from 40 to 60?

• 50%

• 40%

• 30%

• 20%

If the actual weight of a box is 200 pounds and a person guesses it to be 180 pounds, what is the percent error in the guess?

• 8%

• 10%

• 12%

• 15%