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Find the mean deviation about the mean f...

Find the mean deviation about the mean for the data : Income            0-100   100-200 200-300 300-400 400-500 500-600 600-700 700-800per dayNumber          4          8              9             10            7          5           4             3of persons

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To find the mean deviation about the mean for the given data, we will follow these steps: ### Step 1: Organize the Data We have income ranges and the corresponding number of persons (frequency). The data is as follows: | Income Range | Midpoint (x) | Frequency (f) | |--------------|--------------|---------------| | 0 - 100 | 50 | 4 | ...
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