Question

Find the missing frequency if the median of the data is 26.25.

C.I. 0-10 10-20 20-30 30-40 40-50 Total

12 18 x y 14 80​

Answer 1

Answer:

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ANSWER

class f cf

0-10 10 10

10-20 x 10+x

20-30 25 35+x

30-40 30 65+x

40-50 y 65+x+y

50-60 10 75+x+y

75+x+y

75+x+y=100

x+y=25

f=30,h=10,cf=35+x,

2

n

=50

Median=l+(

f

2

n

−cf

)×h

32=(

30

50−35−x

)×10

32−30=

3

15−x

6=15−x

x=9

∴y=16

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Answer 2

Answer:

hi

Step-by-step explanation:

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