Question

(Medan 154
Continuous Series
7. Find out the median size from the following:
10-20
Size
20-30
30 40
40-50
Frequency
42
25
58
40
Answer Median - 3​2.67

Answer 1

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Answer 2

Answer:

32.6

Explanation:

classes. frequency. cf

10-20. 42. 42

20-30. 25. 67

30-40. 58. 125

40-50. 40. 165

here, N/2 = 165/ 2 = 82.5

l=30 ,h=10. , f=58 , cf=67

median= l+ [n/2 -cf/f] ×h

= 30+[82.5-67/58]×10

= 30+155/58.

=1740+155/58

=1895/58

=32.67