ally Ba Ans. nequal Class-Interval 17. Put the following information into frequency distribution and obtain the AM the range of salary 0-500) For a group of wage earners 20%, 40%, 70%, and 80% of the wage earners than 50, 120, 300 and 350 respectively and only 5% are receiving ? 400 and b [Ans. Less than and More than 18. Find mean
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