Calculating Percent Error: Comparing Experimental Values

A scientist measures the boiling point of water and finds it to be 102 degrees Celsius. What is the percent error if the theoretical boiling point is 100 degrees Celsius?

• 2%

• 3%

• 1%

• 5%

A student calculates the density of a substance to be 8.5 g/cm³, while the accepted density is 8.0 g/cm³. What is the percent error in the student's measurement?

• 7.50%

• 10.00%

• 6.25%

• 5.00%

A factory produces light bulbs that are supposed to last 1000 hours. If a batch of bulbs lasts an average of 950 hours, what is the percent error in the expected lifespan?

• 5%

• 2%

• 10%

• 7%

A recipe calls for 200 grams of sugar, but a chef accidentally uses 220 grams. What is the percent error in the amount of sugar used?

• 20%

• 15%

• 5%

• 10%

A car's fuel efficiency is tested, and it is found to be 25 miles per gallon, while the manufacturer claims it should be 30 miles per gallon. What is the percent error in the fuel efficiency?

• 25%

• 16.67%

• 20%

• 10%

A student measures the height of a plant to be 15 cm, but the expected height is 18 cm. Calculate the percent error in the student's measurement.

• 16.67%

• 5%

• 25%

• 10%

A chemist expects to yield 50 grams of a product from a reaction but only obtains 45 grams. What is the percent error in the yield?

• 15%

• 5%

• 20%

• 10%

A basketball player has a free throw percentage of 75%, but in a recent game, they made 60 out of 80 attempts. What is the percent error compared to their average?

• 5%

• 0%

• 15%

• 10%

A thermometer reads 98 degrees Fahrenheit, but the actual temperature is 100 degrees Fahrenheit. What is the percent error in the thermometer reading?

• 5%

• 2%

• 1%

• 10%

A student measures the circumference of a circle to be 31.5 cm, while the theoretical circumference is 30 cm. What is the percent error in the student's measurement?

• 2%

• 10%

• 5%

• 15%