Math, asked by aartipdave, 11 months ago

ve any one of the following subquestions:
The median of the following data is 49.2 Find the values off, and if f = 90:
Marks 20 - 30 30 – 40 40 – 50 50 – 60 60 – 70 70 – 80/80 – 90
Frequency
15 25 20
8 10​

Answers

Answered by ashwaidubey2000
0

Answer:

hello........... ...

Answered by sonalityagi07
2

Answer:

the  question is incomplete or in correct please post pic of this question as you can see we can easily find median missing frequencies must be in between hope you understand

Step-by-step explanation:

c.i                  frequency      cumulative frequency

20 - 30              15                          15                          now,                                                                          

30 - 40              25                          40                    median class is  40 - 50

40 - 50              20                          60                     l = 40 , c.f = 40, f = 20 , h =10

50 - 60                8                          68                              n/2 = 90/2 =45

60 - 70                10                       78              median

70 - 80                f1                       78 + f1  

80 - 90                f2                        78 + f1  + f2  

     sum of          90          

     frequency                    and 78 + f1 + f2 = 90

                                                     f1 + f2 = 12

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