Exploring Percent Error Concepts

What does absolute error measure?

• The sum of the approximate and exact values

• The difference between the approximate and exact values

• The product of the approximate and exact values

• The ratio of the approximate value to the exact value

In a science experiment, if the expected value is 150 milliliters and the measured value is 147 milliliters, what is the absolute error?

• 1 milliliter

• 2 milliliters

• 3 milliliters

• 4 milliliters

How do you calculate percent error?

• By dividing the absolute error by the exact value and multiplying by 100

• By adding the absolute error to the exact value and multiplying by 100

• By dividing the exact value by the absolute error and multiplying by 100

• By subtracting the absolute error from the exact value and multiplying by 100

If a teacher counts 356 students but there are actually 376 students, what is the percent error?

• 7.3%

• 6.3%

• 8.3%

• 5.3%

In a crowded sports arena, if 250 seats are counted with a 20% error, what is the range of acceptable number of seats?

• 150 to 350

• 200 to 250

• 250 to 300

• 200 to 300

What is the absolute error if Emily's car traveled 9.2 meters but was supposed to travel 10 meters?

• 0.2 meters

• 0.4 meters

• 0.6 meters

• 0.8 meters

What is the percent error if Jerome's car traveled 10.6 meters but was supposed to travel 10 meters?

• 6%

• 4%

• 7%

• 5%

What does a smaller percent error indicate in an experiment?

• The experiment is inconclusive

• The experiment is invalid

• The experiment is more accurate

• The experiment is less accurate

If a guess of 382 gumballs is made but there are actually 408 gumballs, what is the absolute error?

• 24

• 26

• 30

• 28

If the percent error for a guess of 382 gumballs is 6.36%, what is the percent error for a guess of 456 gumballs?

• 11.2%

• 10.8%

• 11.8%

• 11.6%