Before constructing a dam on the Colorado River, the U.S. Army Corps of Engineers performed a series of tests to measure the water flow past the proposed location of the dam

Before constructing a dam on the Colorado River, the U.S. 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 of Gallons per Minute)	Frequency
1,001–1,050	7
1,051–1,100	21
1,101–1,150	32
1,151–1,200	49
1,201–1,250	58
1,251–1,300	41
1,301–1,350	27
1,351–1,400	11
Total	246

Use the data given in the table to construct a “more-than” cumulative frequency distribution and ogive.
Use the data given in the table to construct a “less-than” cumulative frequency distribution and ogive.
Use your ogive to estimate what proportion of the flow occurs at less than 1,30thousands of gallons per minute.

Solutions

a.

b.

c.

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