Electric Usage for New and Old meter 160 200 240, 280 320 360 400 Old New 140어 120어 100어 80 60- 40- 20 160 200 240 280 320 360 400 Electric Usage Panel variable: Meter Electric Usange for old and new...

An officer was appointed by the Malaysia Energy Commission to study the
difference between old and new electricity meter for Malaysia households. He
collected the electric usage before and after changing the electricity meter
from 2000 households in Perak and Selangor. The summary of the data is
shown by the histograms and box plats below.

State the population of the above study. Hence, comment on the error
of the above sample.

Extracted text: Electric Usage for New and Old meter 160 200 240, 280 320 360 400 Old New 140어 120어 100어 80 60- 40- 20 160 200 240 280 320 360 400 Electric Usage Panel variable: Meter Electric Usange for old and new meter 450 400어 350어 300어 250어 200어 150 New Old Meter Frequency- Bectric Usage