Percent Change and Error
Flashcard
•
Mathematics
•
7th - 8th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is percent error?
Back
Percent error is a measure of how inaccurate a measurement is, expressed as a percentage of the difference between the estimated value and the actual value.
2.
FLASHCARD QUESTION
Front
How do you calculate percent error?
Back
Percent Error = |(Estimated Value - Actual Value)| / Actual Value × 100%.
3.
FLASHCARD QUESTION
Front
What is the formula for percent change?
Back
Percent Change = (New Value - Old Value) / Old Value × 100%.
4.
FLASHCARD QUESTION
Front
If a value increases from 50 to 75, what is the percent change?
Back
Percent Change = (75 - 50) / 50 × 100% = 50% increase.
5.
FLASHCARD QUESTION
Front
If a value decreases from 200 to 150, what is the percent change?
Back
Percent Change = (150 - 200) / 200 × 100% = -25% decrease.
6.
FLASHCARD QUESTION
Front
What does a positive percent change indicate?
Back
A positive percent change indicates an increase in value.
7.
FLASHCARD QUESTION
Front
What does a negative percent change indicate?
Back
A negative percent change indicates a decrease in value.
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