Math, asked by gkaka0915, 1 month ago

in the frequency of 100 families given below the numbers of families corresponding to expenditures group 20-40and 60-80are missing from the table however the median is known be 50 find the missing frequency. Expenditures 0-20 20-40 40-60 60-80 80-100


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Answers

Answered by shivangsavant2007
0

Answer:

Exp     Frequency      cumulative freq

 

0-20        14                  14              

 

20-40        x                  14+x

 

40-60        28                 42+x

 

60-80         y                  42+x+y

 

80-100      15                 57+x+y  

               ____

                100

Step-by-step explanation:

now substituting value of x in eq 1, 57+x+y = 100,

                                                  57 + 22+y=100

                                                               y=21

the number of families corresponding to expenditure groups 20—40 is = 22 and 60—80  is = 21 in  the table

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