Section A ( 39 marks )
1 . A box contains 80 cards . Each card has a number between one and five written on it . The following table shows the frequencies for each number .
Number 1 2 3 4 5 Frequency 12 f 10 16 24
( a ) Find the value of f .
( b ) Find
[ 2 ]
( i ) the median ;
( ii ) the mode ;
( iii ) the interquartile range . [ 5 ]
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