Apps. and Interpretation for IBDP Maths Ebook 1 | Page 14

Your Practice Set – Applications and Interpretation for IBDP Mathematics
Chapter
2
Approximation and Error
SUMMARY POINTs
�
Summary of rounding methods:
Correct to 3 Correct to 3
2.71828
significant figures decimal places
Round off 2.72 2.718
� Consider a quantity measured as Q and correct to the nearest unit d :
1
d : Maximum absolute error
2
1 1
Q � d � A � Q � d : Range of the actual value A
2 2
1
Q�
d : Lower bound (Least possible value) of A
2
1
Q�
d : Upper bound of A
2
Maximum absolute error
�100%
: Percentage error
Q
Solutions of Chapter 2
4
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