Question

100 Surnames were randomly picked up from a local telephone directory and the frequency distribution of the number of letters in the english alphabets in the surnames were obtained as follows: No.of letters No. of Surnames 1-4. 6 4-7. 30 7-10. 40 10-13. 16 13-16. 4 16-19. 4 find median
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Answer 1

Number of letters Frequency (f) Cumulative frequency

10 − 13 16 76 + 16 = 92

13 − 16 4 92 + 4 = 96

16 − 19 4 96 + 4 = 100

Total (n) 100