10 Questions
What is the percent error when a measurement is 20% bigger than the actual value?
20%
What is the percent error when a measurement is smaller than the true value?
Negative
In the given example, what is the percent error when the acceleration of the falling ball is measured to be 8.7 m/s² and the true value is 9.8 m/s²?
11.22%
Why should the absolute value of the quantity in the numerator be used when calculating percent error?
To ensure that the percent error is always positive
Regardless of whether the measurement is bigger or smaller than the true value, what sign should the percent error always be?
Positive
What is the definition of accuracy?
Accuracy is defined as how close a measurement is to the true or accepted value.
Why is accuracy important in buying the right size rug?
Accuracy is important in buying the right size rug because inaccurate measurements can lead to wasted time and money.
What is percent error?
Percent error is a ratio of the difference between the true value of a measurement and the measured value, multiplied by 100.
How is percent error calculated?
Percent error is calculated by taking the absolute value of the difference between the measured value and the true value, dividing it by the true value, and then multiplying by 100.
What was the percent error in the measurement of the room's width?
The percent error in the measurement of the room's width was calculated as follows: $|\frac{9-7.5}{7.5}| \times 100$.
Test your knowledge on the importance of accuracy and learn why precise measurements are crucial in avoiding costly mistakes. Explore various scenarios, like the rug incident, to understand the implications of inaccurate data and how it can lead to unexpected outcomes.
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