Percentage Error (Leaving Cert Mathematics): Quizzes
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Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What does percentage error help us express?
What does percentage error help us express?
Accuracy as a percentage
What is the formula for percentage error?
What is the formula for percentage error?
How should the error value be treated when calculating percentage error?
How should the error value be treated when calculating percentage error?
Always taken as positive
If the estimate is 240 and the true value is 230, what is the error?
If the estimate is 240 and the true value is 230, what is the error?
10
What is the percentage error when error is 10 and true value is 230? (to 1 d.p.)
What is the percentage error when error is 10 and true value is 230? (to 1 d.p.)
4.3%
What does tolerance refer to in measurements?
What does tolerance refer to in measurements?
Acceptable range of error
What do upper and lower bounds represent?
What do upper and lower bounds represent?
Maximum and minimum values
A box width is 24 cm (nearest cm). What is the range of possible true values?
A box width is 24 cm (nearest cm). What is the range of possible true values?
23.5 cm to 24.5 cm
What is the upper bound of a length measured as 28 cm (to the nearest cm)?
What is the upper bound of a length measured as 28 cm (to the nearest cm)?
28.5 cm
Which bounds should be used to find the maximum perimeter of a rectangle?
Which bounds should be used to find the maximum perimeter of a rectangle?
Upper bounds for both dimensions
Which bounds should be used to find the minimum value of a calculation?
Which bounds should be used to find the minimum value of a calculation?
Lower bounds
Length 28 cm, breadth 16 cm (nearest cm). What is the maximum perimeter?
Length 28 cm, breadth 16 cm (nearest cm). What is the maximum perimeter?
90 cm