Understanding Percent Error Concepts

This video tutorial explains how to calculate percent error using a university enrollment example. It introduces the concept, provides the formula, and demonstrates a step-by-step calculation. The video concludes with the usefulness of percent error in quantifying prediction accuracy.

What is the primary purpose of calculating percent error?

• To determine the exact value of a measurement

• To quantify the accuracy of a prediction

• To convert measurements into percentages

• To find the average of multiple values

In the university enrollment example, what was the projected number of students?

• 5,900

• 6,150

• 6,000

• 6,200

What is the actual enrollment number in the university example?

• 6,200

• 5,850

• 6,150

• 6,000

What is the first step in calculating percent error?

• Divide the estimated value by the actual value

• Subtract the actual value from the estimated value

• Take the absolute value of the result

• Multiply the result by 100

What does the percent error formula help to determine?

• The sum of two values

• The accuracy of an estimate

• The difference between two values

• The exact value of a measurement

How do you express the error as a percentage in the percent error formula?

• By multiplying by 100

• By adding 100

• By dividing by 100

• By subtracting 100

What is the final step in calculating percent error?

• Add the actual and estimated values

• Multiply the absolute value by 100

• Subtract the estimated value from the actual value

• Divide the result by the estimated value

What is the absolute value used for in the percent error calculation?

• To find the average error

• To simplify the calculation

• To ensure the error is positive

• To convert the error into a percentage

Which of the following is NOT a step in calculating percent error?

• Subtract the actual value from the estimated value

• Divide the result by the actual value

• Multiply the result by 100

• Add the estimated and actual values

What is the result of dividing 150 by 6,000 in the example?

• 0.15

• 0.0025

• 0.025

• 0.15%