Measurement Errors with Percentages

The deer population is estimated to be 17,600 in northern Illinois, but an actual count was 21,300. What is the percent error?

• 21%

• 17.37%

• 17.4%

• 21.02%

As the result of experimental work, a student finds the density of a liquid to be 30 g/cm3. The known density of that liquid is 25 g/cm3. What is the percent error of this student’s work?

• 200

• 20

• 2

• 0.02

An object is measured to be 3.12 g.  The accepted value is 4.50 g.  What is the percentage error for this measurement?

• 43.1%

• 30.7%

• 30.666%

• 25.1%

The students measured length during a science experiment, they got 12 cm. But the actual measurement was 14.25 cm. What was the percent error?

• 15.79%

• 18.75%

• 2.25%

• 18%

The distance around a neighborhood is 6 miles. When Sam clocked it with an odometer, the distance was 5.52 miles.

What is the percent error of the clocking?

• 10%

• 6.5%

• 7%

• 8%

An experimental measurement was taken of 10.4 mL and the actual measurement was 9.7 mL. What is ​ the percent error?

approximately ​ (a)  

• 7.2%

• 0.09%

• 6.7%

• 3.2%

The ratio that describes how far an estimate is from the actual amount

• Percent Error

• Percent Change

• Percent

The student council estimated that they would have 250 people attend the homecoming dance. The number of people who attended was 315. What is the percent of error to the nearest hundredth percent? Type the answer in the blank up to the hundredth place value.

Mathematical Equivalence

ON

A zookeeper predicted that the weight of a newborn lion would be 3.6 pounds.
When the zoo’s lion gave birth, the newborn weighed 4.5 pounds.
What is the zookeeper’s percent error?

Mathematical Equivalence

ON

Answer explanation

Percent error = difference ÷ actual

The actual in this case is the 4.5 pounds

So... (4.5 - 3.6) ÷ 4.5 = 0.9 ÷ 4.5 = 0.2 or 20%

A water bottling company uses a machine to fill its 8-ounce bottles. A bottle passes inspection if the percent error of the amount of water in the bottle is 1% or less. Would a bottle that contains 7.95 ounces of water pass inspection?

 

A bottle of water that contains 7.95 ounces of water 1 ​​​ (a)   pass inspection.​

• would

• would not