Calculating Percent Error Simplified

This video tutorial explains how to calculate percent error, using examples involving the density of aluminum and iron. It covers the formula for percent error, demonstrates calculations, and distinguishes between error and percent error. The video concludes with a summary of the key points.

What is the measured value of the density of aluminum in the given problem?

• 2.6 grams per cubic centimeter

• 2.5 grams per cubic centimeter

• 2.7 grams per cubic centimeter

• 2.8 grams per cubic centimeter

What is the accepted value of the density of aluminum?

• 2.5 grams per cubic centimeter

• 2.8 grams per cubic centimeter

• 2.6 grams per cubic centimeter

• 2.7 grams per cubic centimeter

Which of the following is the correct formula for calculating percent error?

• |Actual Value - Measured Value| / Measured Value * 100

• |Measured Value - Actual Value| / Actual Value * 100

• (Actual Value - Measured Value) / Actual Value * 100

• (Measured Value - Actual Value) / Measured Value * 100

What is the percent error for the aluminum density problem?

• 0.7%

• 3.7%

• 2.7%

• 1.7%

What is the error in the aluminum density problem?

• 0.1 grams per cubic centimeter

• -0.1 grams per cubic centimeter

• -0.2 grams per cubic centimeter

• 0.2 grams per cubic centimeter

What is the measured value of the density of iron in the new problem?

• 7.6 grams per cubic centimeter

• 7.7 grams per cubic centimeter

• 7.8 grams per cubic centimeter

• 7.9 grams per cubic centimeter

What is the actual value of the density of iron?

• 7.9 grams per cubic centimeter

• 7.6 grams per cubic centimeter

• 7.8 grams per cubic centimeter

• 7.7 grams per cubic centimeter

What is the error in the iron density problem?

• -0.26 grams per cubic centimeter

• 0.16 grams per cubic centimeter

• 0.26 grams per cubic centimeter

• -0.16 grams per cubic centimeter

What is the percent error for the iron density problem?

• 2.036%

• 3.036%

• 4.036%

• 5.036%

Which of the following steps is NOT part of calculating percent error?

• Subtracting the actual value from the measured value

• Taking the absolute value of the difference

• Dividing by the measured value

• Multiplying by 100