The total energy consumption (in kWh) for the month of July 2017 for a sample of 28 houses in a certain city is shown below:
573 466 622 539 480 653 512 784 438 841 592 482 605 553 492 733 536 428 545 477 624 510 672 434 581 506 570 487.
a) Beginning the first class at 400 and using a class with of 50, construct a cumulative frequency polygon (ogive) for the data.
b) What percentage of houses consumed at least 625 kWh in July 2017?

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The Answer of The total energy consumption (in kWh) for the month of July 2017 for a sample of 28 houses in a certain city is shown below:
573 466 622 539 480 653 512 784 438 841 592 482 605 553 492 733 536 428 545 477 624 510 672 434 581 506 570 487.
a) Beginning the first class at 400 and using a class with of 50, construct a cumulative frequency polygon (ogive) for the data.
b) What percentage of houses consumed at least 625 kWh in July 2017?

The Total Energy Consumption (In KWh) for the Month of July