Your Practice Paper – Applications and Interpretation SL for IBDP Mathematics

� Trapezoidal Rule : a , b ( a

� b): End points n : Number of intervals b� a h � : Interval width n b

_� 1))

� ^f ( ^x ) d ^x a

� Estimation by Trapezoidal Rule :

1 2

1 . The estimation overestimates if the estimated value is greater than the

actual value of ^f ( ^x ) d ^x a

2 . The estimation underestimates if the estimated value is less than the

actual value of

� Relationship between frequencies and cumulative frequencies :

Data Frequency

Data less than or equal to

Cumulative frequency

� Measures of central tendency for a data set { x1 , x2, x3, , x } arranged in ascending order : x1 � x2 � x3 � � xn 1 . x �

: Mean n 2 . The datum or the average value of two data at the middle : Median 3 . The datum appears the most : Mode n

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