Estimate the mode

A medium-sized asset management firm has 56 fund managers.  Each of these managers has its own portfolio.  The percentage returns from the managers' portfolios are shown in the table below:

Return percentageNumber of managers
0-108
10-2018
20-3021
30-407
40-502


Estimate the mode for this data set.

Correct answer:

m =  20.89

Step-by-step explanation:

20m30  8 5+18 15+21 25+7 35+2 45=m (8+18+21+7+2)  56m=1170  m=561170=20.89285714  m=2858520.892857=20.89



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