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Question 6100 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 was obtained as follows: Number of letters1−44−77−1010−1313−1616−19Number of surnames630401644Determine the median number of letters in the surnames. Find the mean number of letters in the surnames. Also, find the modal size of the surnames.

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Question 6

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 was obtained as follows:

Number of letters1447710101313161619Number of surnames630401644



Determine the median number of letters in the surnames. Find the mean number of letters in the surnames. Also, find the modal size of the surnames.





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