Hi,

the second step in my exercice is to calculate the sum of the amout for each 
class et not the frequency 

i have this vector

x           y
1          100
2          1500 
3          3250
4          6250
5          2000
6           450


i want to use the function table and cat to calculate the sum of the amount in 
each class [0-1000], [1000-3000],[> 3000]

Thank you for your help??

inchallah


      
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