Before constructing a dam on the river Brahmaputra. The Indian Army Corps, of Engineers performed a series of tests to measure the water flow past the proposed location of the dam. The results of the testing were used to construct the following frequency distribution:

River Flow

(Thousands Gallons Per Minute) Frequency

1000-1050 7

1050-1100 21

1100- 1150 32

1150-1200 49

1200-1250 58

1250-1300 41

1300-1350 27

1350-1400 11

Total 246

a) Use the data given in the table to construct a more than cumulative frequency distribution.

b) Construct an ogive based on part (a)

c) Compute the mean of the above frequency distribution.