Your Practice Paper – Applications and Interpretation HL for IBDP Mathematics
� Box-and-whisker diagram :
� A datum x is defined to be an outlier if x�Q1 � 1.5IQR or x�Q3 � 1.5IQR
� Coding of data : 1 . Only the mean , the median , the mode and the quartiles will change when each datum of the data set is added or subtracted by a value
2 . All measures of central tendency and measures of dispersion will change when each datum of the data set is multiplied or divided by a value
23 Probability
� Terminologies :
1 . U : Universal set 2 . A : Event
3 . x : Outcome of an event 4 . nU ( ): Total number of elements 5 . nA ( ): Number of elements in A
� Formulae for probability : 1 . P ( A� B) � P ( A) � P ( B) � P ( A�
B)
2 . P ( A�) �1� P ( A)
3 .
P ( A� B)
P ( A| B) �
P ( B) 4 . P ( A) � P ( A� B) � P ( A�
B�)
5 . P ( A�� B�) � P ( A� B) � 1
6 . P ( A� B) � P ( A) � P ( B) and P ( A�B) � 0 if A and B are mutually exclusive
7 . P ( A� B) � P ( A) � P ( B) and P ( A| B) � P ( A) if A and B are independent
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