1.

If the arithmetic mean of the data given below is 28, find (a) the missing frequency, and (b) the median of the series:Profit per retail shop (in Rs)0 – 1010 – 2020 – 3030 – 4040 – 5050 – 60Number of retail shops121827–176

Answer»

If the arithmetic mean of the data given below is 28, find (a) the missing frequency, and (b) the median of the series:
























Profit per retail shop (in Rs)



0 – 10



10 – 20



20 – 30



30 – 40



40 – 50



50 – 60



Number of retail shops



12



18



27



–



17



6


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