In a frequency distribution, the mid value of the first class is 15 and each has equal class intervals. The cumulative frequencies of the classes are 89, 70, 62, 55, 47, 32, 15 and 7. Give the original frequency distribution and find its mean.
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In a frequency distribution, the mid value of the first class is 15 and each has equal class intervals. The cumulative frequencies of the classes are 89, 70, 62, 55, 47, 32, 15 and 7. Give the original frequency distribution and find its mean.
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