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The table shows some households sorted according to their usage of electricity:Electricity usage (units)Number of households80 – 90390 – 1006100 – 1107110 – 12010120 – 1309130 – 1404Calculate the median usage of electricity. |
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Answer»
Half of the number of houses = 20 We have to find the electricity usage of the 20th house. According to this, we can divide |
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